science experiments of class 8

SCIENCE EXPERIMENTS FOR CLASS 8

Science experiments for class 8 – cbse syllabus.

Activity-6.1: Cumbustible and non-cumbustible substances Activity-6.2: Air is essential for burning Activity-6.3: Air is essential for burning Activity-6.4: Test for ignition Activity-6.5: Structure of a flame

Activity-15.1: Charging by rubbing Activity-15.2: Charging by rubbing on different materials Activity-15.3: Types of charges and their interaction Activity-15.4: Transfer of charge Activity-15.5: Prepare a short report on earth quakes Activity-15.6: Prepare a short report on devastation caused by tsunami in India

Kolb Labs emphasizes the need of experiential learning for kids. Kolb labs offers Science Lab As A Service to schools. We visit schools and perform science experiments for class 8 students within school campus as per CBSE syllabus. Schools need not to worry about setting up science lab and maintaining it. Instructors from Kolb Labs will bring the equipment, material required for each science experiment for class 8 to school and demonstrate the activities as per CBSE syllabus.Experiential learning helps students to learn fast and understand the concepts clearly. More importantly, practical demonstration of science experiments will make learning fun and exciting for 8th class students. Learning by doing will help students immensely to improve their thought process. Kolb Labs encourages to adopt experiential learning at the very young age itself to influence the thought process of young minds towards innovation and creativity.There are 102 Science experiments for Class 8 as per CBSE Syllabus. Kolb Labs will perform most of the science experiments using the real material. Kolb labs will also use other methods like images, videos, prototypes etc. Kolb labs will encourage class 8 students to perform activities hands-on.Kolb Labs also helps Class 8 students to prepare science working models and science projects to participate in science fairs. Kolb Labs also encourages 8th class students to come up with new science project ideas with knowledge gained through science activities performed as per CBSE syllabus.

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• CBSE Science Project
• Science Experiments For Class 8

Science Experiments for CBSE Class 8

Every student has a specific style of learning that suits him/her. These CBSE Class 8 Science experiments that we offer help every student uniquely by explaining the content to them practically. These CBSE Class 8  Science experiments help students to expand their Scientific horizons and get submerged into the world of Science. The Science experiments for Class 8 CBSE provided have been explained in an easy and comprehensive manner making it simpler for the students to get a grasp of the concepts. Images and diagrams have been provided to give a transparent understanding of the setup or experiment. These experiments will serve as a guide to students in the fair that is Science and lead them towards a better understanding of the subject.

These are some Science experiments for CBSE Class 8 that we have compiled together.

Static Electricity Experiment

Create your own Quicksand

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Science Projects for Class 8

• Updated on  
• Jan 15, 2024

Science and its applications are way beyond the textbook experiments and class activities we did as kids. But to boost the interest of students in science and help them learn the basics, these simple and interesting experiments and observation projects enable them to understand varied basic concepts of Science. Often class 8 students are asked to submit their science project by the end of the year, in which they have to choose a topic, carry out an experiment and state the conclusion of their chosen scientific principle through their science project. Read this blog to learn about the best and most interesting science projects for class 8 which can help you delve deeper into the magic of science while also getting a higher score in your science class!

This Blog Includes:

Best science projects for class 8, top 45 science models for class 8, science projects for class 8 for exhibitions, measuring glucose in food, boiling point of water, baking soda volcano, red cabbage indicator, potato battery , thermal conductivity of metals, pinhole camera, create your own biodiesel, astronomical telescope, cotton candy machine, create a working model of the human heart.

Download NCERT Solutions Class 7 Science Chapter 8 Important Questions and Answers PDF

For science projects for class 8, students are generally asked to perform an experiment, conduct an activity or design a working model which elucidates the principle that they have chosen. Thus, we will explain to you how you can perform simple experiments as well as create a working model.

Here is a list of top Science Models that you can try:

• Drop an egg to prove the first law of motion
• Assemble a Newton’s cradle
• Blow out a candle with a balloon
• Relight a candle without touching it
• Measure and compare lung capacity
• Build an infinity mirror
• Brew up some root beer
• Construct a cup holder
• Assemble a spring scale
• Extract bismuth from Pepto-Bismol
• Make a solar desalinator
• Perform a starch test with iodine
• Keep your hands warm
• Explore symbiosis with nitrogen-fixing bacteria
• Crash cars for science
• Discover the center of gravity
• Power up homemade batteries
• Examine the connection between personality and memory
• Concoct and test your own shampoo
• Fuel a film canister rocket
• Stand on a pile of paper cups
• Create a rainbow of flames
• Get your laundry really clean
• Test water quality
• Fingerprint analysis
• Create a roller coaster loop
• Extract your DNA
• Separate water into hydrogen and oxygen
• Build a circuit to detect ripe produce
•  Discover the strength of interleaved paper
• Guide a growing plant through a maze
• Find out if peppermint improves reaction time
• Raise a hydraulic elevator
• Grow a carbon sugar snake
• Generate a Lichtenberg figure
• Teach a computer to play tic-tac-toe
• Cast animal tracks
• Construct a Rube Goldberg machine
• Block the sun’s UV rays
• Turn juice into spheres
• Measure your threshold of hearing 
• Measure how body temperature and reaction time vary throughout the day
• Model the human cardiovascular system
• Use spin tests to discover how your eyes and ears affect your balance and dizziness 
• Determine how much huddling reduces heat loss in warm-blooded animals

Here are some of the Science Projects for Class 8th Exhibitions that you can try:

The majority of the meals that we take in a day include carbohydrates or sugar. But the form in which we consume them is different and the one that is found inside the human body is different. In our body, glucose is broken down into simpler substances and you can opt for a glucose experiment for your Class 8 science project through which you can analyse the presence of carbohydrates in glucose and our food. As per your choice, collect some food items of daily life along with food dye, room temperature water, plastic glasses, knife and record your observations. You will also need glucose reading strips for this science project and create a positive strip by dipping a glucose strip into a sugar-based or glucose solution as well as a negative strip by dipping a glucose strip into the water. Then, test each of the foods you have taken with these two strips and record your observations. 

Water in its pure form has a specific boiling point and if we keep on adding some solutions or chemicals to water, its boiling point tends to change. For this simple and interesting science project for Class 8, you need some basic household items, i.e. sugar, salt, lemon juice, oil, oranges, jaggery, tea, etc. Ask an adult for supervision and assistance in helping you test the boiling point of water while adding a different item every time. Record your observation for these items and create your Science project accordingly. 

Having a homemade volcano is an amazing science science project. You need to build a cone shaped structure similar to a volcano with a container in the middle. Then in that container, add vinegar. Now, to demonstrate the working of the volcano, add baking soda along with some food colour to the vinegar. The volcano will erupt with effervescence which is generated due to the reaction of baking soda and vinegar thus releasing CO2 gas.

The red cabbage that we eat consists of a natural pH indicator that we can use to identify the nature of various substances. Since not many people are aware of this natural indicator, you can use red cabbage to create a unique Science project for Class 8. First, extract the juice of red cabbage and take some paper cups. Now, you need a specific amount of the following items in each paper cup:

• Baking Soda
• Lemon Juice

Now, pour the red cabbage juice into each cup until the colour of the liquid/powder [baking soda] changes. Note down your observations regarding the nature of acid and base in each item as indicated by the red cabbage and astonish your class with an amazing science experiment!

Do you know that the potato we use in our food can actually convert chemical energy into electrical energy? As a potato has many nutrients that act as chemicals in a particular setup, it can be used as an electrical battery and thus a unique working model for your Class 8 science project! You need a few potatoes to create your own potato battery and the process is quite simple. Take two potatoes, zinc and copper electrodes, 6 alligator clips and a small bulb/digital clock. First, insert the zinc and copper electrodes in the potatoes and then use alligator clips to attach the electrodes with the clock or bulb [adult supervision necessary].

You will see that the potatoes will charge electrodes and then the clock or the bulb will turn on automatically.

Amongst the most popular science projects for Class 8, you must have come across this one in day-to-day scenarios. Have you noticed that the pan in which we cook gets all heated up including the handles of it or the tong with which we cook our chapatis becomes hot? This is because of thermal conductivity in solids which means that the molecules of solids when heated up move in different directions and spread the heat. For your project, you can pick a bunch of solid items and check at which temperature the entire object gets heated up and up to which temperature.

You must have come across various high-end cameras, but a pinhole camera is something that you can construct from simple household products. The camera does not contain any type of lens rather it is a light-proof box which has a small hole on one of its sides. Light from one side will fall into it and then by using its effort, it will reflect the picture on the other side of it.  the image formed by this lens is inverted, thus,  it becomes a tree basis of your entire project. 

Science Working Model for Class 8

Here is a list of Science Working Models for Class 8:

• Wind Turbine
• Biogas plant

Now, let’s pick up some of these and learn how to make these models:

Biodiesel is made from vegetable oil and animal-fat based diesel fuel including long-chain alkyl and esters. Biodiesels are made by chemically reacting lipids, e.g., vegetable oils, animals with alcohol to produce fatty acid esters. The project is for renewable energy, physics, biology.

A telescope is an optical instrument to make observations to make distant objects look closer with an arrangement of lenses or curved mirrors. The rays of light are collected and focus on resulting in magnified images.

A cotton candy machine follows the same framework everywhere in the world and you can make it right at home. When sugar is heated, it becomes liquid caramel. If liquid caramel is pushed through tiny holes to the outside by centrifugal force when the container continuously rotates, cotton candy is made by recrystallization.

One of the most famous working models is the human heart’s working model. The project only requires a physioball, PVC Pipe cap, balloons, and drip pipe. The project will barely take an hour to complete and you will be able to impress your teacher with it.

Drop an egg to prove the first law of motion Assemble a Newton’s cradle Blow out a candle with a balloon Relight a candle without touching it Measure and compare lung capacity

The majority of the meals that we take in a day include carbohydrates or sugar. But the form in which we consume them is different and the one that is found inside the human body is different. In our body, glucose is broken down into simpler substances and you can opt for a glucose experiment for your Class 8 science project through which you can analyse the presence of carbohydrates in glucose and our food.

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Science projects for class 8, best projects and working models.

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Safalta Expert Published by: Noor Fatima Updated Wed, 26 Oct 2022 01:53 PM IST

Here is all you need to know about Science Projects for Class 8. Read the article to learn and understand how to create Science Projects for Class 8. 

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Best science projects for class 8

Top 40 science projects for class 8.

• Drop an egg to prove the first law of motion
• Assemble a Newton’s cradle
• Create a roller coaster loop
• Extract your DNA
• Separate water into hydrogen and oxygen
• Build a circuit to detect ripe produce
•  Discover the strength of interleaved paper
• Guide a growing plant through a maze
• Find out if peppermint improves reaction time
• Assemble a spring scale
• Extract bismuth from Pepto-Bismol
• Make a solar desalinator
• Perform a starch test with iodine
• Keep your hands warm
• Explore symbiosis with nitrogen-fixing bacteria
• Crash cars for science
• Discover the center of gravity
• Power up homemade batteries
• Examine the connection between personality and memory
• Concoct and test your own shampoo
• Fuel a film canister rocket
• Stand on a pile of paper cups
• Create a rainbow of flames
• Blow out a candle with a balloon
• Relight a candle without touching it
• Measure and compare lung capacity
• Build an infinity mirror
• Brew up some root beer
• Construct a cup holder
• Fingerprint analysis
• Get your laundry really clean
• Test water quality
• Raise a hydraulic elevator
• Grow a carbon sugar snake
• Generate a Lichtenberg figure
• Teach a computer to play tic-tac-toe
• Cast animal tracks
• Construct a Rube Goldberg machine
• Block the sun’s UV rays
• Turn juice into spheres 

Science Projects for Class 8 for Exhibitions

• The boiling point of water

• Potato Battery

• Firstly, add the copper electrodes and zinc to the potato.
• Afterward, use alligator clips to connect the electrodes to the clock or bulb.
• Do this experiment under adult supervision.

Measuring Glucose In Food

Pinhole camera

• Thermal conductivity of metals

Science working model for class 8

• Solar cell 
• Wind turbine
• Biogas plant
• Astronomical telescope
• Cotton candy machine
• Creating a working model of the human heart

Astronomical telescope 

A working model of the human heart 

Name some science projects for Class 8 Exhibition.

Name some working models for science projects for class 8., what are the best science projects for class 8, what is safalta school online, what are the benefits of safalta school online.

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The Top 10 Class 8 Science Projects to Showcase

• April 21, 2024

List of Class 8 Science Projects

1. build a lightbulb, 2. design a robotic hand, 3. compare electrolyte in sports drinks, 4. measure algae growth, 5. first law of motion, 6. assemble newton’s cradle, 7. blow candle with a balloon, 8. relight a candle without touching, 9. identify strength of interleaved paper, 10. generate a lichtenberg figure, final words.

As a science teacher, you know that showing students real-world examples of scientific experiments is the best way to engage them in learning new concepts. Here are 10 science projects that you can use in your class 8 science projects classroom to show off your teaching skills and engage your students!

There are many science projects that can be showcased in a class. One project that is easy to do and can be quite informative is to build a lightbulb. This is a project that can be completed in a few minutes and can provide students with an understanding of how electricity works.

Another popular science project is to make a model of something complex, like the human body. This project can take hours or even days, but it will provide students with an in-depth understanding of the subject. It is also possible to make models of plants or animals, which are both fun and educational.

Whatever science project you choose, make sure that it is one that your classmates would be interested in and willing to participate in. By choosing a project that interests them, you will ensure that the class session will be enjoyable for everyone.

A robotic hand can help disabled people to perform everyday tasks.

Robotic hands have many applications, including in the manufacturing industry. They can be used to create products that are difficult or impossible to make with a human hand.

One of the most popular robotic hands is the prosthetic hand known as Biggio. This hand was designed by Dr. Rocco Biggio and is made by the company Touch Bionics. Biggio is a prosthetic hand that can be controlled with a joystick. It has three fingers and a thumb and can be used to perform common tasks, such as picking up objects and giving presentations.

Designing a robotic hand can be an interesting science project for students in elementary school or high school. By studying how different types of robotic hands work, students can develop ideas for their own designs.

One of the most important things students learn in science is how to compare and contrast different scientific concepts. One way to do this is by comparing electrolytes in sports drinks.

Electrolytes are essential nutrients that help the body maintain fluid balance and perform other important functions. Sports drinks contain electrolytes like sodium, potassium, magnesium, and calcium. These drinks are especially important for athletes because they help them replenish lost fluids and electrolytes during exercise.

When it comes to sports drinks, there are a few key things to consider.

First , sports drinks should have a high level of sodium. This is because sodium helps to preserve water and prevent dehydration.

Second , sports drinks should have a low level of potassium. This is because too much potassium can be dangerous and lead to muscle cramps and seizures.

Third, sports drinks should have a balanced level of magnesium and calcium. This is because magnesium and calcium help to keep muscle cells functioning properly and protect against bone fractures.

By understanding how electrolytes work in sports drinks, students can compare and contrast them in class. This will help them learn how to analyze scientific concepts critically.

Algae are an essential part of the marine ecosystem, and can be used to produce biofuels and bioproducts. Science projects that measure algae growth can be a fun way to show students how science works.

One simple science project to measure algae growth is to set up a growth chamber and track the number of algae over time. This project can also be used to compare the growth rates of different strains of algae.

Another fun science project to showcase in class is to create a bio filter using algae. This project can help students learn about waste water treatment processes, as well as microbiology. By filtering wastewater using algae, students can learn about which pollutants are removed by the bacteria, and which ones are not.

The first law of motion is the law of inertia, which states that an object at rest will remain at rest and an object in motion will continue in motion with a constant speed and direction.

This law can be used to explain why objects stay in their places when we move them around. For example, when you move a chair across the room, it stays where you put it because the chair is being held by the inertia of the surrounding objects.

You can also use this law to predict how things will behave in future situations. For example, if you drop a rock into a pool of water, you can expect the rock to sink to the bottom because the water is acting as a physical force on it.

The second law of motion is Newton’s second law of motion, which states that the strength of a physical force is proportional to the mass of the object being moved and inversely proportional to the square of the distance between the objects.

This law explains why large objects (like cars) are harder to move than small objects (like rocks). It also helps us to predict how things will behave in future situations by telling us how powerful various forces are.

One of the most interesting science projects that can be done in class is to assemble Newton’s Cradle. This project is a great way to show students how gravity works and how objects move.

To do this project, students will need to gather a few items. They will need a wooden dowel, an egg, some thread, and a compass. The first step is to put the dowel in the egg so that it balances on one end. Then, they will need to tie the thread around the dowel so that it hangs down. Finally, they will need to place the compass on top of the thread and adjust it until it points north. Now all they have to do is wait for the egg to fall off the dowel.

This project is a lot of fun and is a great way to teach students about science. It’s also a great way to show them how gravity works and how objects move.

One of the most popular science projects to showcase in class is blowing a candle with a balloon. This project is easy to do and can be done with just a few supplies.

To begin, cut a small hole in the bottom of the balloon. Once the hole is cut, tie the balloon so that it is slightly inflated. Next, light the candle inside the balloon and wait until the candle has burned down to about half its size. Once the candle has been blown out, remove it from the balloon by pulling on one of the ends.

There are many science projects that can be done to showcase in class. One of the top science projects to show off is the ability to relight a candle without touching it. This project requires the use of a battery, some common household items, and a little bit of patience. 

To begin, the student needs to gather all the necessary materials. They will need a battery, a candle, a match, and some salt.

Next, the student must find a place where they can safely light the candle without being disturbed. The best place to do this is usually in a dark room.

Once the candle is lit, the student needs to wait until the match has burned down to half its length before blowing it out.

Next, the student must take the salt and place it on top of the flame on the candle. Once the salt has melted, the student will be able to blow out the flame with little effort.

Interleaved paper is a type of paper that has a number of small pieces of paper sandwiched between two larger pieces of paper. This type of paper is often used in scientific experiments because it is strong and can resist tears.

One common science project that uses interleaved paper is the measurement of strength. Scientists use interleaved paper to measure the strength of materials like rubber and metal. By measuring the force required to tear the paper, scientists can learn about the properties of those materials.

Another common science project that uses interleaved paper is the study of fluids. Scientists often use interleaved paper to study how fluids move through tubes and other vessels. By studying how the fluids move, scientists can learn about their properties and how they interact with each other.

One of the most popular science projects to showcase in class is generating a Lichtenberg figure. This is a type of image that uses light and shadow to create a three-dimensional effect.

To create a Lichtenberg figure, you will need several pieces of equipment. First, you will need a light source and a white surface to project the image onto. You can use an overhead projector or a light box. Next, you will need a black piece of paper to create the shadow. Finally, you will need a camera or another device to capture the image.

The process of generating a Lichtenberg figure is simple but can be tricky to perfect. You will need to experiment with different settings and see what produces the best results. If you are new to this type of project, there are many online resources that can help guide you through the process.

To conclude this article, I would like to mention some of the best science projects that you can use to showcase your scientific knowledge in class.

One project that is perfect for high school students is a lab experiment that shows the effects of heat on a liquid. This project can be done in a chemistry class, for example, and it will show your students how heat can change the behavior of a liquid.

Another great project for high school students is a lab experiment that demonstrates the effects of light on plants. This project could be done in a biology class, for example, and it will show your students how light can affect plant growth.

Finally, another great science project for high school students is a lab experiment that demonstrates the effect of gravity on objects. This project could be done in physics or math classes, for example, and it will show your students how gravity affects different objects.

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Decoding Biosphere

10 Fascinating Science Experiments for Kids in Class 8

Engaging Curious Minds: Science experiments are the gateway to unlocking a world of curiosity and wonder in the minds of young learners. For Class 8 students, the age of exploration and discovery, hands-on experiments provide an immersive and exciting way to comprehend complex scientific concepts. In this article, we present a compilation of ten captivating science experiments tailored for kids in Class 8. These experiments are not only educational but also incredibly fun, fostering a love for science and nurturing essential critical thinking skills.

1. Dancing Raisins: Exploring Buoyancy and Gas Release

Materials Needed:

• Clear glass or plastic cup
• Carbonated soda (clear)
• Fill the glass with carbonated soda.
• Drop a few raisins into the glass.
• Observe as the raisins dance and move up and down in the liquid.

Explanation: The experiment demonstrates the release of carbon dioxide gas bubbles from the soda. These bubbles attach to the rough surface of the raisins, making them buoyant. As the bubbles rise to the surface, they bring the raisins along, creating the captivating “dancing” effect.

2. Rainbow Milk: Exploring Surface Tension and Chemical Reactions

• Whole milk (full-fat milk)
• Food coloring (different colors)
• Plate or shallow dish
• Pour a thin layer of milk onto the plate.
• Add drops of different food colors onto the milk.
• Dip a cotton swab in dish soap and then touch the milk with it.

Explanation: The experiment demonstrates the interactions between surface tension, fat molecules in milk, and soap molecules. As soap is added, it breaks the surface tension of the milk and disrupts the fat molecules, causing them to move and create a mesmerizing “rainbow” pattern.

3. Homemade Volcano: Simulating Eruptions

• Clay or playdough
• Baking soda
• Red food coloring
• Create a volcano shape using clay or playdough.
• Place a tablespoon of baking soda inside the “volcano.”
• Add a few drops of red food coloring and a drop of dish soap to the baking soda.
• Pour vinegar into the volcano.

Explanation: The combination of baking soda and vinegar creates a chemical reaction that produces carbon dioxide gas. The gas builds up pressure inside the “volcano” until it erupts, resembling a real volcanic eruption.

4. Static Electricity Butterfly: Demonstrating Static Charge

• Small piece of paper
• Small piece of tissue paper
• Inflate the balloon and tie it closed.
• Rub the balloon against your hair or clothing to create static electricity.
• Hold the balloon near the paper butterfly and observe what happens.

Explanation: Rubbing the balloon transfers electrons, creating a static charge on its surface. The charged balloon can attract lightweight objects, like the paper butterfly, due to the imbalance of charges.

5. Rain in a Jar: Creating a Mini Water Cycle

• Jar with a lid
• Plastic wrap
• Fill the small cup with water and place it inside the jar.
• Cover the jar with plastic wrap and secure it with the lid.
• Place the jar in a sunny spot.

Explanation: As the sun heats the water in the cup, it evaporates and condenses on the plastic wrap. The condensed water droplets eventually “rain” back into the cup, simulating the natural water cycle on a small scale.

6. Invisible Ink: Revealing Hidden Messages

• Lemon juice
• Q-tip or paintbrush
• White paper
• Lamp or heat source
• Dip the Q-tip or paintbrush in lemon juice.
• Write a message on the white paper using the lemon juice.
• Allow the juice to dry.
• Gently heat the paper using a lamp or heat source.

Explanation: Lemon juice contains compounds that react with heat. When heated, the lemon juice message will turn brown as the compounds undergo a chemical change, revealing the hidden message.

7. Bending Light: Experimenting with Refraction

• Clear glass
• Pencil or straw
• Fill the glass with water.
• Place the pencil or straw in the water at an angle.
• Observe how the pencil appears bent at the water’s surface.

Explanation: The bending of the pencil is due to the refraction of light as it travels from air to water. The change in speed causes the light rays to bend, creating the illusion of a bent pencil.

8. Eggshell Geode: Growing Crystals

• Eggshell (cleaned and emptied)
• Food coloring (optional)
• Prepare a saturated solution of Epsom salt by dissolving it in warm water.
• Add a few drops of food coloring to the solution if desired.
• Pour the solution into the eggshell.
• Place the eggshell in a safe spot and let it sit for a few days.

Explanation: As the water evaporates from the solution, Epsom salt crystals will start to form inside the eggshell. The slow evaporation process allows the crystals to grow gradually, creating a stunning geode-like appearance.

9. Balloon Rocket: Understanding Action and Reaction

• Drinking straw
• Chairs or tables
• Thread the string through the straw.
• Tape the ends of the string to two points (e.g., chairs or tables) to create a “track.”
• Inflate the balloon and pinch the opening.
• Attach the balloon to the straw.
• Release the balloon, and watch it zoom along the string.

Explanation: When the balloon is released, the air escaping from the balloon creates a force that propels the balloon forward. This is an example of Newton’s third law of motion, where every action has an equal and opposite reaction.

10. Homemade Lava Lamp: Discovering Density and Buoyancy

• Clear plastic bottle
• Vegetable oil
• Food coloring
• Alka-Seltzer tablet
• Fill the bottle about one-fourth full with water.
• Add a few drops of food coloring to the water.
• Fill the rest of the bottle with vegetable oil, leaving a small space at the top.
• Break an Alka-Seltzer tablet into smaller pieces and drop one piece into the bottle.

Explanation: Oil and water do not mix because oil is less dense than water. The Alka-Seltzer tablet reacts with water to release gas bubbles. These bubbles attach to the colored water droplets, causing them to rise through the oil. When the gas escapes at the top, the water droplets sink back down, creating a lava lamp-like effect.

Science experiments for kids in Class 8 are not just about learning theories from textbooks; they’re about igniting curiosity, fostering critical thinking, and providing a hands-on experience that makes science truly come alive. From dancing raisins to invisible ink and homemade volcanoes, these experiments engage young minds and inspire a lifelong love for learning and discovery. By encouraging kids to explore the world through experimentation, we empower them to become the scientists and innovators of tomorrow. So, roll up those sleeves, gather the materials, and let the adventure of scientific exploration begin!

10 Engaging Science Experiments for Kids in Class 10

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Science Projects for Class 8

Table of Contents

Science projects are a fantastic way for Class 8 students to engage with scientific concepts in a hands-on and practical manner. These projects not only enhance understanding but also spark curiosity and innovation among young learners. This article will explore a variety of science project ideas suitable for Class 8 students, providing both inspiration and guidance.

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Best Science Projects for Class 8

For science projects in Class 8, students are typically asked to perform experiments, conduct activities, or design working models that illustrate a chosen scientific principle. In this guide, we will explain how to conduct simple experiments and create effective working models.

Top 45 Science Models for Class 8

Here is a list of top Science Models that you can try:

• Drop an egg to prove the first law of motion
• Assemble a Newton’s cradle
• Blow out a candle with a balloon
• Relight a candle without touching it
• Measure and compare lung capacity
• Brew up some root beer
• Construct a cup holder
• Assemble a spring scale
• Build an infinity mirror
• Extract bismuth from Pepto-Bismol
• Make a solar desalinator
• Perform a starch test with iodine
• Keep your hands warm
• Explore symbiosis with nitrogen-fixing bacteria
• Crash cars for science
• Discover the center of gravity
• Power up homemade batteries
• Examine the connection between personality and memory
• Concoct and test your own shampoo
• Fuel a film canister rocket
• Stand on a pile of paper cups
• Create a rainbow of flames
• Get your laundry really clean
• Test water quality
• Fingerprint analysis
• Create a roller coaster loop
• Extract your DNA
• Separate water into hydrogen and oxygen
• Build a circuit to detect ripe produce
• Discover the strength of interleaved paper
• Guide a growing plant through a maze
• Find out if peppermint improves reaction time
• Raise a hydraulic elevator
• Grow a carbon sugar snake
• Generate a Lichtenberg figure
• Teach a computer to play tic-tac-toe
• Cast animal tracks
• Construct a Rube Goldberg machine
• Block the sun’s UV rays
• Turn juice into spheres
• Measure your threshold of hearing
• Measure how body temperature and reaction time vary throughout the day
• Model the human cardiovascular system .
• Use spin tests to discover how your eyes and ears affect your balance and dizziness
• Determine how much huddling reduces heat loss in warm-blooded animals

Easy Science Project Ideas for Class 8

Popular Science Project Ideas for Class 8

Below are the popular science project ideas for class 8 are-

Volcano Eruption Model

Objective : To demonstrate a volcanic eruption using a chemical reaction.

Materials :

• Baking soda
• Red food coloring
• A small bottle
• Clay or paper mache to create the volcano structure

Procedure :

• Build the volcano around the bottle using clay or paper mache.
• Add baking soda, a few drops of dish soap, and red food coloring into the bottle.
• Pour vinegar into the bottle to trigger the eruption.

Concept : This project demonstrates an acid-base reaction, producing carbon dioxide gas, which causes the eruption.

Also Read: NCERT Solutions for Class 8

Objective : To harness solar energy for cooking.

• Cardboard box
• Aluminum foil
• Plastic wrap
• Black construction paper
• Tape and glue
• Food items to cook (e.g., s’mores)
• Line the inside of the box with aluminum foil.
• Place black construction paper at the bottom of the box to absorb heat.
• Cover the top opening with plastic wrap to create a greenhouse effect.
• Angle a piece of foil on the lid to direct sunlight into the box.
• Place the food inside and let the sun do the cooking.

Concept : This project illustrates the greenhouse effect and renewable energy usage.

Also Read: NCERT Solutions for Class 8 Science

Water Purification System

Objective : To design a simple water filtration system.

• Plastic bottles
• Activated charcoal
• Coffee filters
• Dirty water sample
• Cut the bottom off one bottle and invert it to use as a funnel.
• Layer the funnel with coffee filters, activated charcoal, sand, and gravel.
• Pour the dirty water through the funnel and collect the purified water in another bottle.

Concept : This project explains the principles of filtration and the importance of clean water.

Lemon Battery

Objective : To generate electricity using a chemical reaction.

• Copper coins
• LED light or small buzzer
• Insert a copper coin and a zinc nail into each lemon.
• Connect the lemons in series using wires.
• Attach the wires to an LED light or buzzer to complete the circuit.

Concept : This project demonstrates how chemical energy is converted into electrical energy.

Read More: NCERT Syllabus for Class 8

Plant Growth Under Different Light Conditions

Objective : To observe the effects of light on plant growth.

• Plant seeds (e.g., beans)
• Different light sources (sunlight, LED, fluorescent, darkness)
• Plant the seeds in pots with soil.
• Place each pot under different light conditions.
• Observe and record the growth of the plants over several weeks.

Concept : This project explores photosynthesis and the importance of light for plant growth.

Importance of Science Projects

Science projects play a crucial role in education by:

• They help students grasp complex scientific principles through practical application.
• Projects require planning, problem-solving, and analytical thinking.
• Students can explore their interests and develop innovative solutions.
• Successfully completing a project boosts self-esteem and confidence in scientific abilities.

Tips for Successful Science Projects

• Select a project that piques your interest and curiosity.
• Outline your project steps, gather materials, and allocate time for each phase.
• Formulate a hypothesis, conduct experiments, and draw conclusions based on your observations.
• Keep a detailed log of your procedures, observations, and results.
• Be ready to explain your project and findings clearly and confidently.

FAQs on Science Projects for Class 8

What is a science project.

A science project for Class 8 involves conducting experiments, activities, or designing models to demonstrate scientific principles learned in the curriculum.

Which is the best science project for Class 8?

The best science project for Class 8 could be building a simple water purification system or creating a solar oven, as they are both practical and educational.

How do I choose a science project?

Choose a science project that aligns with your interests, is feasible with the available resources, and effectively demonstrates a scientific concept.

Suggest some best science project ideas for Class 8

Some great science project ideas for Class 8 include a volcano eruption model, lemon battery, plant growth under different light conditions, and a homemade electromagnet.

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Top 99+ Science Fair Project Ideas for 8th Grade Students

Looking for science fair project ideas for 8th grade students? Discover captivating experiments tailored for 8th graders, igniting curiosity and showcasing scientific skills.

Are you prepared to turn your curiosity into scientific magic and have an absolute blast along the way? Grab your favorite snack (how about some brain fuel?), get comfy, and let’s dive into a world of super cool projects that will make your science fair experience unforgettable.

Are you feeling the excitement? Because I’m pumped up and ready to rock this science fair with you! Let’s make it happen!

Table of Contents

Importance of Science Fair Project Ideas for 8th Grade

Check out the importance of science fair project ideas for 8th grade:-

Messy Science Playdates

Imagine 8th-grade science fair projects as the ultimate playdate with science. No dull lectures, just hands-on experiments – it’s like dipping your toes into a pool of curiosity and making a splash!

Chase Your Curiosity Trail

Think of these projects as treasure hunts for your questions. Instead of sticking to textbooks, 8th graders get to be the explorers of their own curiosity trails. It’s like following a trail of wonders and discovering the secrets of the scientific jungle.

Mad Scientist Vibes

Ever wanted to be a mad scientist in a lab coat? Well, now’s the chance! Science fair projects are like your personal laboratory where you can mix, create, and let loose your inner mad scientist – minus the evil laugh (unless you want to add that too!).

Skills Buffet for Life

These projects aren’t just adding points to your science scoreboard; they’re building a whole set of life skills. From tackling puzzles to working in a team, 8th graders are gearing up with skills that will turn them into all-around rockstars – both inside and outside the classroom.

So, whether you’re causing mini-explosions in the kitchen or decoding the mysteries of the backyard, 8th-grade science fair projects are your VIP passes to a world where learning is an adventure, science is a playdate, and curiosity is your compass!

How do I Get Started with a Science Fair Project? 

Hey there, budding scientist! Ready to rock your science fair project? Here’s the lowdown to kickstart your journey:

• Follow Your Passion: What gets you pumped? Think about what sparks your interest in science. Start from there!
• Zoom In: Now, hone in on something specific. Choose a question or problem that makes you go, “Hmm, I wonder!”
• Dive into Research: Time to do a little detective work! Hit the books, surf the web—soak up all that juicy info about your topic.
• Make a Guess: Take a stab at it! What do you think might happen? Trust your gut and make a hypothesis.
• Plan Your Experiment: Map out your game plan. What materials do you need? How will you set up your experiment?
• Gather Your Gear: Raid your kitchen, scavenge your closet—grab whatever you need. Get creative and use what you have!
• Test it Out: Ready, set, go! Dive into your experiment. Follow your plan, jot down observations, and don’t forget to have fun!
• Check Out the Results: What did you discover? Take a peek at your data. Look for any surprises or interesting patterns.
• Share Your Story: Spread the word! Practice explaining your project and get ready to blow some minds at the science fair.

And there you have it—your recipe for science fair success! Now go on, get out there, and let your inner scientist shine!

Also Read: Service Project Ideas for High School

List of Science Fair Project Ideas for 8th Grade Students

Here is a complete list of science fair project ideas for 8th grade students: 

• Experiment with different types of music to see how they affect heart rates.
• Grow veggies in your backyard and see how they respond to sunlight and water.
• Test natural bug repellents to keep mosquitoes at bay.
• Watch ants to see what foods they prefer.
• Check if caffeine affects sleep in mice.
• See how soil types impact seed growth.
• Hatch chicken eggs at different temperatures.
• Test natural vs. chemical cleaners on stains.
• Try different diets on fruit flies.
• Check if packaging affects food freshness.
• Test the acid levels of popular drinks and their effects on teeth.
• See which cleaner is best at removing stains.
• Bake bread and study the chemistry behind it.
• Rust metal in different temperatures.
• Learn about cooking oils’ chemical compositions.
• Boil water with different salt levels.
• Grow crystals with different pH levels.
• Study soap or vinegar’s chemical makeup.
• Check fruit color vs. vitamin C content.
• Investigate pH changes in flavored water.
• Bounce balls of different materials.
• Swing pendulums of various lengths.
• Test paper airplanes in windy conditions.
• Roll balls down ramps at different angles.
• Play with magnets to see their strength.
• Strum guitar strings of different lengths.
• Stretch rubber bands and observe changes.
• Drop objects to measure gravitational pull.
• See how light bulbs’ energy usage varies.
• Push toy cars across different surfaces.

Environmental Science

• Grow plants in polluted vs. clean water.
• Watch how deforestation affects soil.
• Study CO2 levels in urban vs. rural areas.
• Simulate an oil spill and its effects on wildlife.
• Track bird migration during climate changes.
• Examine how cities impact local animals.
• Map how weather affects local ecosystems.
• Experiment with recycling vs. dumping trash.
• Observe litter’s impact on animal behavior.
• Compare algae growth in warm vs. cool water.

Earth Science

• Mimic erosion with different soils.
• Experiment with shadows to study sunlight angles.
• Build models to understand earthquakes.
• Check erosion rates with and without vegetation.
• Simulate volcanic eruptions’ ash clouds.
• Use ice to sculpt landscapes.
• Plant in different soils to see growth.
• Test water quality in clean vs. dirty areas.
• Measure tide patterns with moon phases.
• Study rock weathering in various environments.

Engineering

• Build and break model bridges.
• Test soundproofing materials like egg cartons.
• Design solar panels for optimal sunlight.
• Construct wind turbine blades for efficiency.
• Power toy cars with solar or wind energy.
• Insulate houses for energy savings.
• Make rockets for distance and speed.
• Shape boats for maximum buoyancy.
• Measure bike speed with different gears.
• Create parachutes to slow down falls.

Computer Science

• Model ecosystems with population dynamics.
• Encrypt messages and crack the codes.
• Study social media’s impact on behavior.
• Design video games for player engagement.
• Monitor screen time’s effect on focus.
• Predict weather patterns with algorithms.
• Track smartphone usage for productivity.
• Code robots for different tasks.
• Analyze traffic flow for city planning.
• Simulate stock market trends with data.

Mathematics

• Explore repeating patterns in nature.
• Find Fibonacci sequences in flower petals.
• Sort numbers with different algorithms.
• Play with prime numbers’ unique properties.
• Calculate shapes’ areas and perimeters.
• Make geometric shapes from everyday items.
• Graph different types of number sequences.
• Study triangles’ angles and side lengths.
• Chart real-life data with graphs.
• Discover infinity’s role in math.

Health Science

• Practice stress-relief techniques like deep breathing.
• Monitor sleep habits and its impact on focus.
• Track diets and heart health.
• Try mindfulness exercises for mental health.
• Exercise and track mood changes.
• Limit screen time and observe sleep patterns.
• Listen to music for relaxation.
• Monitor self-esteem and social media use.
• Form support groups for stress management.
• Meditate to improve emotional balance.

Social Science

• Study group decisions and peer pressure.
• Compare school achievements across incomes.
• Explore friendships in the age of social media.
• Survey cultural norms and their impacts.
• Check family dynamics and mental health.
• Discuss gender roles and career choices.
• Survey parenting styles and academic success.
• Observe leadership styles and personalities.
• Compare teaching methods for engagement.
• Assess school environments’ impact on grades.

These project ideas offer hands-on learning and real-world applications, perfect for sparking curiosity and making science fun!

What is the best science experiments for Class 8?

Check out some of the best science expeirments for class 8:-

• Fizz-Pop Chemistry Show : Ever seen vinegar and baking soda team up? Mix them, and watch the fizz party! It’s not just a chemical reaction; it’s a spectacular display of science in action. You’re practically hosting a mini fireworks show in a jar!
• Liquid Magic Density Tower : Picture this – a tower of liquids that don’t mix! Create your own magical density tower using liquids like oil, water, and syrup. It’s like a liquid rainbow that defies gravity right on your desk.
• Gadget Gurus: Simple Machines Edition : Step into the shoes of an inventor! Build simple machines like levers or pulleys using everyday materials. It’s not just a science experiment; it’s your chance to be a genius inventor crafting tools that make life easier.
• Sun Chef Solar Oven Extravaganza : What if you could cook using the power of the sun? Enter the solar oven! Create your own sun-powered kitchen and become the chef of the future. It’s like baking cookies with sunshine – a taste of science and deliciousness.
• Microscopic Safari Adventure : Grab a microscope and embark on a safari, not in the wild, but in the microscopic world! Explore tiny plant and animal cells like a detective solving mysteries. It’s not just science; it’s a journey into the unseen wonders of life.
• pH Party with Colorful Chemicals : Get ready for a pH party where colors tell the tale! Test the acidity of everyday substances using funky pH indicators. It’s not just science; it’s like being a detective decoding the secret identities of household items.
• Eco-Explorer in a Jar : Transform into an eco-explorer with your own mini-world in a jar. Watch plants, soil, and tiny critters create a living ecosystem. It’s not just an experiment; it’s your personal nature documentary unfolding right on your desk.

So, whether you’re causing a chemistry commotion or going on a microscopic safari, Class 8 science experiments are not just lessons – they’re your ticket to a world of thrilling, hands-on exploration!

So, there you have it – science fair project ideas for 8th grade are like treasure maps to a land of curiosity and fun.

Imagine your classroom transforming into a wild science safari, with you as the fearless leader. Whether you’re mixing up potions, building contraptions, or decoding the language of plants, these projects are your backstage pass to the coolest show in town.

So, go ahead, dive in, get your hands dirty (in a totally awesome way), and let the science fair be your stage. Because in the world of 8th-grade science projects, the spotlight is yours, and the discoveries are endless!

FAQs (Science Fair Project Ideas for 8th Grade Students)

1. how can parents support their 8th-grade students in their science fair projects.

Parents can support their children by providing guidance, helping with research, and ensuring they have the necessary materials for their project.

2. What’s the importance of making a hypothesis in a science fair project?

A hypothesis sets the direction for the experiment and helps students make predictions about the outcome.

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72 Easy Science Experiments Using Materials You Already Have On Hand

Because science doesn’t have to be complicated.

If there is one thing that is guaranteed to get your students excited, it’s a good science experiment! While some experiments require expensive lab equipment or dangerous chemicals, there are plenty of cool projects you can do with regular household items. We’ve rounded up a big collection of easy science experiments that anybody can try, and kids are going to love them!

Easy Chemistry Science Experiments

Easy physics science experiments, easy biology and environmental science experiments, easy engineering experiments and stem challenges.

1. Taste the Rainbow

Teach your students about diffusion while creating a beautiful and tasty rainbow! Tip: Have extra Skittles on hand so your class can eat a few!

Learn more: Skittles Diffusion

2. Crystallize sweet treats

Crystal science experiments teach kids about supersaturated solutions. This one is easy to do at home, and the results are absolutely delicious!

Learn more: Candy Crystals

3. Make a volcano erupt

This classic experiment demonstrates a chemical reaction between baking soda (sodium bicarbonate) and vinegar (acetic acid), which produces carbon dioxide gas, water, and sodium acetate.

Learn more: Best Volcano Experiments

4. Make elephant toothpaste

This fun project uses yeast and a hydrogen peroxide solution to create overflowing “elephant toothpaste.” Tip: Add an extra fun layer by having kids create toothpaste wrappers for plastic bottles.

5. Blow the biggest bubbles you can

Add a few simple ingredients to dish soap solution to create the largest bubbles you’ve ever seen! Kids learn about surface tension as they engineer these bubble-blowing wands.

Learn more: Giant Soap Bubbles

6. Demonstrate the “magic” leakproof bag

All you need is a zip-top plastic bag, sharp pencils, and water to blow your kids’ minds. Once they’re suitably impressed, teach them how the “trick” works by explaining the chemistry of polymers.

Learn more: Leakproof Bag

7. Use apple slices to learn about oxidation

Have students make predictions about what will happen to apple slices when immersed in different liquids, then put those predictions to the test. Have them record their observations.

Learn more: Apple Oxidation

8. Float a marker man

Their eyes will pop out of their heads when you “levitate” a stick figure right off the table! This experiment works due to the insolubility of dry-erase marker ink in water, combined with the lighter density of the ink.

Learn more: Floating Marker Man

9. Discover density with hot and cold water

There are a lot of easy science experiments you can do with density. This one is extremely simple, involving only hot and cold water and food coloring, but the visuals make it appealing and fun.

Learn more: Layered Water

10. Layer more liquids

This density demo is a little more complicated, but the effects are spectacular. Slowly layer liquids like honey, dish soap, water, and rubbing alcohol in a glass. Kids will be amazed when the liquids float one on top of the other like magic (except it is really science).

Learn more: Layered Liquids

11. Grow a carbon sugar snake

Easy science experiments can still have impressive results! This eye-popping chemical reaction demonstration only requires simple supplies like sugar, baking soda, and sand.

Learn more: Carbon Sugar Snake

12. Mix up some slime

Tell kids you’re going to make slime at home, and watch their eyes light up! There are a variety of ways to make slime, so try a few different recipes to find the one you like best.

13. Make homemade bouncy balls

These homemade bouncy balls are easy to make since all you need is glue, food coloring, borax powder, cornstarch, and warm water. You’ll want to store them inside a container like a plastic egg because they will flatten out over time.

Learn more: Make Your Own Bouncy Balls

14. Create eggshell chalk

Eggshells contain calcium, the same material that makes chalk. Grind them up and mix them with flour, water, and food coloring to make your very own sidewalk chalk.

Learn more: Eggshell Chalk

15. Make naked eggs

This is so cool! Use vinegar to dissolve the calcium carbonate in an eggshell to discover the membrane underneath that holds the egg together. Then, use the “naked” egg for another easy science experiment that demonstrates osmosis .

Learn more: Naked Egg Experiment

16. Turn milk into plastic

This sounds a lot more complicated than it is, but don’t be afraid to give it a try. Use simple kitchen supplies to create plastic polymers from plain old milk. Sculpt them into cool shapes when you’re done!

17. Test pH using cabbage

Teach kids about acids and bases without needing pH test strips! Simply boil some red cabbage and use the resulting water to test various substances—acids turn red and bases turn green.

Learn more: Cabbage pH

18. Clean some old coins

Use common household items to make old oxidized coins clean and shiny again in this simple chemistry experiment. Ask kids to predict (hypothesize) which will work best, then expand the learning by doing some research to explain the results.

Learn more: Cleaning Coins

19. Pull an egg into a bottle

This classic easy science experiment never fails to delight. Use the power of air pressure to suck a hard-boiled egg into a jar, no hands required.

Learn more: Egg in a Bottle

20. Blow up a balloon (without blowing)

Chances are good you probably did easy science experiments like this when you were in school. The baking soda and vinegar balloon experiment demonstrates the reactions between acids and bases when you fill a bottle with vinegar and a balloon with baking soda.

21 Assemble a DIY lava lamp

This 1970s trend is back—as an easy science experiment! This activity combines acid-base reactions with density for a totally groovy result.

22. Explore how sugary drinks affect teeth

The calcium content of eggshells makes them a great stand-in for teeth. Use eggs to explore how soda and juice can stain teeth and wear down the enamel. Expand your learning by trying different toothpaste-and-toothbrush combinations to see how effective they are.

Learn more: Sugar and Teeth Experiment

23. Mummify a hot dog

If your kids are fascinated by the Egyptians, they’ll love learning to mummify a hot dog! No need for canopic jars , just grab some baking soda and get started.

24. Extinguish flames with carbon dioxide

This is a fiery twist on acid-base experiments. Light a candle and talk about what fire needs in order to survive. Then, create an acid-base reaction and “pour” the carbon dioxide to extinguish the flame. The CO2 gas acts like a liquid, suffocating the fire.

25. Send secret messages with invisible ink

Turn your kids into secret agents! Write messages with a paintbrush dipped in lemon juice, then hold the paper over a heat source and watch the invisible become visible as oxidation goes to work.

Learn more: Invisible Ink

26. Create dancing popcorn

This is a fun version of the classic baking soda and vinegar experiment, perfect for the younger crowd. The bubbly mixture causes popcorn to dance around in the water.

27. Shoot a soda geyser sky-high

You’ve always wondered if this really works, so it’s time to find out for yourself! Kids will marvel at the chemical reaction that sends diet soda shooting high in the air when Mentos are added.

Learn more: Soda Explosion

28. Send a teabag flying

Hot air rises, and this experiment can prove it! You’ll want to supervise kids with fire, of course. For more safety, try this one outside.

Learn more: Flying Tea Bags

29. Create magic milk

This fun and easy science experiment demonstrates principles related to surface tension, molecular interactions, and fluid dynamics.

Learn more: Magic Milk Experiment

30. Watch the water rise

Learn about Charles’s Law with this simple experiment. As the candle burns, using up oxygen and heating the air in the glass, the water rises as if by magic.

Learn more: Rising Water

31. Learn about capillary action

Kids will be amazed as they watch the colored water move from glass to glass, and you’ll love the easy and inexpensive setup. Gather some water, paper towels, and food coloring to teach the scientific magic of capillary action.

Learn more: Capillary Action

32. Give a balloon a beard

Equally educational and fun, this experiment will teach kids about static electricity using everyday materials. Kids will undoubtedly get a kick out of creating beards on their balloon person!

Learn more: Static Electricity

33. Find your way with a DIY compass

Here’s an old classic that never fails to impress. Magnetize a needle, float it on the water’s surface, and it will always point north.

Learn more: DIY Compass

34. Crush a can using air pressure

Sure, it’s easy to crush a soda can with your bare hands, but what if you could do it without touching it at all? That’s the power of air pressure!

35. Tell time using the sun

While people use clocks or even phones to tell time today, there was a time when a sundial was the best means to do that. Kids will certainly get a kick out of creating their own sundials using everyday materials like cardboard and pencils.

Learn more: Make Your Own Sundial

36. Launch a balloon rocket

Grab balloons, string, straws, and tape, and launch rockets to learn about the laws of motion.

37. Make sparks with steel wool

All you need is steel wool and a 9-volt battery to perform this science demo that’s bound to make their eyes light up! Kids learn about chain reactions, chemical changes, and more.

Learn more: Steel Wool Electricity

38. Levitate a Ping-Pong ball

Kids will get a kick out of this experiment, which is really all about Bernoulli’s principle. You only need plastic bottles, bendy straws, and Ping-Pong balls to make the science magic happen.

39. Whip up a tornado in a bottle

There are plenty of versions of this classic experiment out there, but we love this one because it sparkles! Kids learn about a vortex and what it takes to create one.

Learn more: Tornado in a Bottle

40. Monitor air pressure with a DIY barometer

This simple but effective DIY science project teaches kids about air pressure and meteorology. They’ll have fun tracking and predicting the weather with their very own barometer.

Learn more: DIY Barometer

41. Peer through an ice magnifying glass

Students will certainly get a thrill out of seeing how an everyday object like a piece of ice can be used as a magnifying glass. Be sure to use purified or distilled water since tap water will have impurities in it that will cause distortion.

Learn more: Ice Magnifying Glass

42. String up some sticky ice

Can you lift an ice cube using just a piece of string? This quick experiment teaches you how. Use a little salt to melt the ice and then refreeze the ice with the string attached.

Learn more: Sticky Ice

43. “Flip” a drawing with water

Light refraction causes some really cool effects, and there are multiple easy science experiments you can do with it. This one uses refraction to “flip” a drawing; you can also try the famous “disappearing penny” trick .

Learn more: Light Refraction With Water

44. Color some flowers

We love how simple this project is to re-create since all you’ll need are some white carnations, food coloring, glasses, and water. The end result is just so beautiful!

45. Use glitter to fight germs

Everyone knows that glitter is just like germs—it gets everywhere and is so hard to get rid of! Use that to your advantage and show kids how soap fights glitter and germs.

Learn more: Glitter Germs

46. Re-create the water cycle in a bag

You can do so many easy science experiments with a simple zip-top bag. Fill one partway with water and set it on a sunny windowsill to see how the water evaporates up and eventually “rains” down.

Learn more: Water Cycle

47. Learn about plant transpiration

Your backyard is a terrific place for easy science experiments. Grab a plastic bag and rubber band to learn how plants get rid of excess water they don’t need, a process known as transpiration.

Learn more: Plant Transpiration

48. Clean up an oil spill

Before conducting this experiment, teach your students about engineers who solve environmental problems like oil spills. Then, have your students use provided materials to clean the oil spill from their oceans.

Learn more: Oil Spill

49. Construct a pair of model lungs

Kids get a better understanding of the respiratory system when they build model lungs using a plastic water bottle and some balloons. You can modify the experiment to demonstrate the effects of smoking too.

Learn more: Model Lungs

50. Experiment with limestone rocks

Kids  love to collect rocks, and there are plenty of easy science experiments you can do with them. In this one, pour vinegar over a rock to see if it bubbles. If it does, you’ve found limestone!

Learn more: Limestone Experiments

51. Turn a bottle into a rain gauge

All you need is a plastic bottle, a ruler, and a permanent marker to make your own rain gauge. Monitor your measurements and see how they stack up against meteorology reports in your area.

Learn more: DIY Rain Gauge

52. Build up towel mountains

This clever demonstration helps kids understand how some landforms are created. Use layers of towels to represent rock layers and boxes for continents. Then pu-u-u-sh and see what happens!

Learn more: Towel Mountains

53. Take a play dough core sample

Learn about the layers of the earth by building them out of Play-Doh, then take a core sample with a straw. ( Love Play-Doh? Get more learning ideas here. )

Learn more: Play Dough Core Sampling

54. Project the stars on your ceiling

Use the video lesson in the link below to learn why stars are only visible at night. Then create a DIY star projector to explore the concept hands-on.

Learn more: DIY Star Projector

55. Make it rain

Use shaving cream and food coloring to simulate clouds and rain. This is an easy science experiment little ones will beg to do over and over.

Learn more: Shaving Cream Rain

56. Blow up your fingerprint

This is such a cool (and easy!) way to look at fingerprint patterns. Inflate a balloon a bit, use some ink to put a fingerprint on it, then blow it up big to see your fingerprint in detail.

57. Snack on a DNA model

Twizzlers, gumdrops, and a few toothpicks are all you need to make this super-fun (and yummy!) DNA model.

Learn more: Edible DNA Model

58. Dissect a flower

Take a nature walk and find a flower or two. Then bring them home and take them apart to discover all the different parts of flowers.

59. Craft smartphone speakers

No Bluetooth speaker? No problem! Put together your own from paper cups and toilet paper tubes.

Learn more: Smartphone Speakers

60. Race a balloon-powered car

Kids will be amazed when they learn they can put together this awesome racer using cardboard and bottle-cap wheels. The balloon-powered “engine” is so much fun too.

Learn more: Balloon-Powered Car

61. Build a Ferris wheel

You’ve probably ridden on a Ferris wheel, but can you build one? Stock up on wood craft sticks and find out! Play around with different designs to see which one works best.

Learn more: Craft Stick Ferris Wheel

62. Design a phone stand

There are lots of ways to craft a DIY phone stand, which makes this a perfect creative-thinking STEM challenge.

63. Conduct an egg drop

Put all their engineering skills to the test with an egg drop! Challenge kids to build a container from stuff they find around the house that will protect an egg from a long fall (this is especially fun to do from upper-story windows).

Learn more: Egg Drop Challenge Ideas

64. Engineer a drinking-straw roller coaster

STEM challenges are always a hit with kids. We love this one, which only requires basic supplies like drinking straws.

Learn more: Straw Roller Coaster

65. Build a solar oven

Explore the power of the sun when you build your own solar ovens and use them to cook some yummy treats. This experiment takes a little more time and effort, but the results are always impressive. The link below has complete instructions.

Learn more: Solar Oven

66. Build a Da Vinci bridge

There are plenty of bridge-building experiments out there, but this one is unique. It’s inspired by Leonardo da Vinci’s 500-year-old self-supporting wooden bridge. Learn how to build it at the link, and expand your learning by exploring more about Da Vinci himself.

Learn more: Da Vinci Bridge

67. Step through an index card

This is one easy science experiment that never fails to astonish. With carefully placed scissor cuts on an index card, you can make a loop large enough to fit a (small) human body through! Kids will be wowed as they learn about surface area.

68. Stand on a pile of paper cups

Combine physics and engineering and challenge kids to create a paper cup structure that can support their weight. This is a cool project for aspiring architects.

Learn more: Paper Cup Stack

69. Test out parachutes

Gather a variety of materials (try tissues, handkerchiefs, plastic bags, etc.) and see which ones make the best parachutes. You can also find out how they’re affected by windy days or find out which ones work in the rain.

Learn more: Parachute Drop

70. Recycle newspapers into an engineering challenge

It’s amazing how a stack of newspapers can spark such creative engineering. Challenge kids to build a tower, support a book, or even build a chair using only newspaper and tape!

Learn more: Newspaper STEM Challenge

71. Use rubber bands to sound out acoustics

Explore the ways that sound waves are affected by what’s around them using a simple rubber band “guitar.” (Kids absolutely love playing with these!)

Learn more: Rubber Band Guitar

72. Assemble a better umbrella

Challenge students to engineer the best possible umbrella from various household supplies. Encourage them to plan, draw blueprints, and test their creations using the scientific method.

Learn more: Umbrella STEM Challenge

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Working Model of Science for Class 8

List of Science Working Models for Class 8 To Catch your Interest

When it comes to Science exhibitions, every student of CBSE Class 8 aspires to present an impressive and well-prepared project. As such, we have compiled a list of Science Working Models For Class 8 that can be used for school projects. These working models have been carefully selected and are among the best Class 8 Science projects options. Creating these working models will help students develop a better understanding of scientific concepts and capture the subject details a lot better.

This article provides detailed information on each working model listed, including what materials are required and how to construct them. By following these guidelines, students can easily create successful Science projects that impress their teachers and classmates. With a little creativity and effort, students can use these Science Exhibition Working Models Ideas For Class 8 to showcase their understanding of key scientific concepts and principles and demonstrate their ability to apply them to real-world situations.

Follow the Working Model of Science for Class 8 Easy Projects

The CBSE Science projects below have been tried and tested and are considered among the most popular school exhibition options. Moreover, the materials required to construct these models are common in most households, while others can be purchased cheaply.

These Science Exhibition Working Models Ideas For Class 8 are not only simple to make but also serve a practical purpose. They are suitable for various students, from kids participating in Science fairs to middle school and upper school students.

By utilizing these working models, students can better understand scientific concepts and principles and develop valuable problem-solving and critical-thinking skills. Moreover, these projects can be a great way to engage with Science practically and make it more accessible and interesting for students.

List of Science Working Models for Class 8: Find the Best Experiments

As we have mentioned before, the working model of science for Class 8 easy projects is incredibly interesting and simple to make. All you need is some things, and you can start the process. These projects can also be made at home and as a part of group sessions.

Project for Solar Energy  

This scientific model demonstrates how a concave mirror gathers solar radiation and focuses it into a single, small point. Additionally, it explores how colours can absorb sunlight and influence the amount of heat absorbed by an object. To undertake this project, suitable for CBSE Class 8 Science, one must conduct it outdoors on a sunny day or indoors where sunlight enters the room through a window.

Materials Needed: Wooden stand, a tube, concave mirror, black paper, thermometer

To conduct this experiment, the first step is to mount the wooden stand in a suitable location. Once the stand is secure, roll pieces of black paper around the tube. 

Next, attach the tube to the concave or converging mirror. 

After securing the tube, fill it with tap water, being careful not to spill any of the water. 

Allow the tube to sit in the sunlight for 30 minutes. After this time has elapsed, use a thermometer to record the water temperature in the tube.

Electric Generator Project

As taught in CBSE Class 8 Science, the electric generator working model aims to give students a basic understanding of how electricity is generated. This hands-on project is designed to be easily created with commonly available materials found in most homes.

The electric generator, also called a wooden generator, is a relatively simple and enjoyable experiment that demonstrates electricity production through the conversion of mechanical energy. The project involves the construction of a simple device that utilizes the principles of electromagnetic induction to produce electricity.

By building this electric generator, students will gain a practical understanding of how electrical energy can be generated from mechanical energy. They will learn about the basic components of an electric generator, such as a magnet, a coil of wire, and a simple rotor. Additionally, they will learn about the relationship between magnetism and electricity and how these two phenomena are closely interrelated.

Project Potato Battery

This is another working model of Science for Class 8 project . Potatoes are known to have high water content and are also rich in various chemical substances. A chemical reaction occurs when these chemicals come into contact with one or more electrodes.

Materials Needed: Two fresh potatoes, copper and zinc electrode, alligator clips, digital clock.

To perform this experiment, you must insert a zinc and a copper electrode into a potato. 

Next, you will use alligator clips to connect the electrodes to a digital clock.

As the electrodes are inserted into the potato, a chemical reaction will occur between the potato's juices and the electrodes. 

This reaction will generate a small amount of electricity, flowing through the wires and activating the digital clock.

Science Becomes Easier to Learn Working Model of Science for Class 8

Learn more and grow more with these amazing Science Exhibition Working Models Ideals for Class 8. Participate in these projects and increase your critical and analytical thinking skills while gaining an understanding of science as a subject.

FAQs on Working Model of Science for Class 8

1. What is the Potato Battery project in Class 8?

This experiment demonstrates how a simple combination of materials, such as a potato and some wires, can create a functional device that utilizes the basic principles of electricity.

2. Can I use household materials to create Working model of Science for Class 8?

Yes, all the projects mentioned in the list of Science working models for Class 8 can be made using items and materials you can find in the house.

3. How do the working models for Class 8 science help students?

These working models will help students understand the basic concepts of science through practical knowledge.

NCERT Solutions for Class 6, 7, 8, 9, 10, 11 and 12

• NCERT Solutions for Class 8 Science

NCERT Solutions for Class 8 Science : NCERT solutions have been provided below to aid the students with answering the questions correctly, using a logical approach and methodology. The solutions provide ample material to enable students to form a good base and improve the fundamentals of the subject. You can also practice  Extra Questions for Class 8 Science  on LearnCBSE.in

This page provides you all the links to NCERT Solutions for Class 8 Science. You can download, Copy each and every chapter Solutions to your desktop. Science NCERT class 8 solutions are helpful resource developed by our science experts to help students in their class 8 exam.

The links below provide the detailed solutions for NCERT science class 8 textbook .

• Chapter 1 Crop Production and Management
• Chapter 2 Microorganisms: Friend and Foe
• Chapter 3 Synthetic Fibres and Plastics
• Chapter 4 Materials: Metals and Non-Metals
• Chapter 5 Coal and Petroleum
• Chapter 6 Combustion and Flame
• Chapter 7 Conservation of Plants and Animals
• Chapter 8 Cell Structure and Functions
• Chapter 9 Reproduction in Animals
• Chapter 10 Reaching the Age of Adolescence
• Chapter 11 Force and Pressure
• Chapter 12 Friction
• Chapter 13 Sound
• Chapter 14 Chemical Effects of Electric Current
• Chapter 15 Some Natural Phenomena
• Chapter 16 Light
• Chapter 17 Stars and the Solar System
• Chapter 18 Pollution of Air and Water

NCERT Solutions for Class 8 Science (Download PDF)

NCERT textbooks are prescribed by CBSE as the best books for preparation of the school as well as board examinations. The textbooks are deemed as more than enough, without any aid from other refreshers. The solutions are designed keeping in mind the lucid language and the simplicity of the explanations that are given in the NCERT textbooks. Not just the board and school examinations, NCERT textbooks are known to play a very important role in JEE and NEET.

NCERT science book class 8 acts as a stepping stone for further higher classes where u might feel that the topic is out of your league and hard to comprehend. The concepts of science syllabus form the backbone of higher classes. NCERT class 8 science solutions help to clear our basic concepts and make them very easy and interesting for the students.

We prepared Class 8 science NCERT Solutions as per CBSE remodeled assessment structure.  We have discussed extensively how are different food crops produced. Which living organisms do we see under a microscope in a drop of water? Are some of our clothes synthetic? How do we conserve biodiversity? What is the internal structure of a plant? and many more.

NCERT solutions will help in the following manner:

• Authentic Homework Guide
• The base for the preparation of competitive exams like JEE and NEET
• Strengthening basic concepts of subjects
• Error-free solutions
• Extra problems to build upon the basic concepts

Class 8 Science Chapter 1 Crop Production and Management

This chapter explains rural practices related to the creation of yield and their administration.It includes the presentation of various harvest, their climatic and nourishing necessities and the preparation of soil for comprehensive improvement of the crops

Class 8 Science Chapter 2 Microorganisms: Friends and Foe

This chapter manages destructive and valuable kinds of microbes and their significance in different areas. The places where microorganisms live, microorganisms and us, harmful microorganisms, food preservation, nitrogen fixation, and nitrogen cycle are a portion of the primary topics covered in this chapter.

Class 8 Science Chapter 3 Synthetic Fibres and Plastic

This chapter manages artificial texture and plastic that is utilized for an assortment of purpose. Kind of synthetic fibers, characteristics of synthetic fibers, plastics, plastic as materials of choice and plastic and the environment are a portion of the fundamentals points of this chapter.

Class 8 Science Chapter 4 Materials: Metals and Non-metals

This chapter explains the world of metals, non-metals, their properties, and employment. This section will assist the students with classifying the components into metals and non-metals based on their properties. Physical properties of metals and non-metals, chemical properties of metals and non-metals, use of metals and non-metals are a portion of the vital topics talked about in this chapter.

Class 8 Science Chapter 5 Coal and Petroleum

Coal and petroleum manage the two most imperative fuels ever found by humankind. The chapter additionally explains natural gas and how the characteristics assets are getting depleted because of huge and uncontrolled usage.

Class 8 Science Chapter 6 Combustion and Flame

In this chapter, you will learn about different sorts of fuels are utilized for a different purpose at home, in industry and for running autos. Powers like cow dung, wood, coal, charcoal, petroleum, diesel, packed gaseous petrol (CNG) and so on are known to the students. In combustion and flame, the chemical procedure of burning and the sorts of flames created amid this procedure are considered in detail.

Class 8 Science Chapter 7 Conservation of Plants and Animals

Conservation of plants and animals is a critical subject of science. This part will push the students to not just to understand the human exercise that negatively affects the nature’s abundance yet in addition to manners by which they can ensure the fauna and flora of the ecosystem.

Class 8 Science Chapter 8 Cell: Structure and Functions

It explains the inside and out information about the major unit of life -cell. It enlightens the students regarding the discovery of the cell, its inclination, properties, and composition

Class 8 Science Chapter 9 Reproduction in Animals

It explains the modes and procedure of reproduction in creatures. It is fundamental for the continuation of a species. In this chapter, u will figure out how reproduction happens in animals is talked about in detail.

Class 8 Science Chapter 10 Reaching the Age of Adolescence

In this chapter, the student will find out about changed that happen in the human body after which an individual ends up fitting for reproduction.in this chapter we will learn about the human conceptive organs and the role of hormones in the development of an individual.

Class 8 Science Chapter 11 Fore and Pressure

This chapter will take the students through the brilliant world of force and pressure. It will push them to build u uphold of the point as well as ace the ideas that will assist them with performing better.

Class 8 Science Chapter 12 Friction

It is an essential section of physics that manages the backing off or opposition of movement. Its causes, impacts, applications and other key properties are talked about in his chapter.

Class 8 Science Chapter 13 Sound

Sound talks about the distinction between music and noise. Noise pollution, its causes, impacts, and control measures are explained towards the finish off the chapter. This chapter will strengthen your base for future complex topics.

Class 8 Science Chapter 14 Chemical Effects of Electric Current

In this chapter, we will discover that metals, for example, copper and aluminum conducts electricity while materials, for example, rubber, plastic, and wood don’t conduct electricity.

Class 8 Science Chapter 15 Some Natural Phenomenon

This chapter throws light on the wonderful phenomenon of nature, for example, lightning and earthquake. Causes, impacts, magnitude and properties of  lightning are discussed in this chapter.

Class 8 Science Chapter 16 Light

Light talks about the key properties, impacts, and utilization of light and its subordinates. This chapter also gives information about regular reflection, diffused reflection, laws of reflection, etc.

Class 8 Science Chapter 17 Stars and Solar System

This chapter explains about the celestial objects. Position of those objects, their structure and centrality are portrayed in this chapter. This part also discusses the moon, periods of the moon its situation in the planetary system and surface of the moon.

Class 8 Science Chapter 18 Pollution of Air and Water

This chapter addresses the solution for the unsafe wonder of pollution and how might one add to its decrease in the individual dimension. Air pollution, how does air get polluted are some of the significant topics discussed in this chapter.

The solutions are guaranteed to be error-free and easily comprehensible. The students are advised to refer to these authentic solutions against the multiple refresher books. The NCERT textbooks are prescribed by CBSE, and hence form the most authentic source of knowledge in the school syllabus.

FAQs on NCERT Solutions for Class 8 Science

1. Which is the Best Reference or Guide Book for Class 8 Science?

Candidates can use the NCERT Solutions for Class 8 Science to ace up your preparation for the exam. You can use the NCERT textbooks recommended by experts during your preparation.

2. What is the key to score more marks in the CBSE Class 8 Science Exam?

The only way to score more marks in the Class 8 Exam is through rigorous practice. Follow a proper schedule and clear the exam with ease.

3. Where can I get the Solutions for NCERT Books?

You can get the NCERT Solutions Chapterwise from our page and use them to score well. Get to know the topics easily you want to prepare as they are sorted under parent topics.

4. What are the concepts explained in the solutions of NCERT Class 8 Science Textbook?

NCERT Class 8 Science Solutions prevailing will give you topics on at the end of each chapter. All the 18 Chapters are explained in a detailed way. Have a glance at the NCERT Class 8 Science Solutions and the list of 18 Chapters in it.

5. Why NCERT Solutions for Class 8 Science are important?

NCERT Solutions are designed in a way that students can quickly grasp the concepts and clear all your queries. Books are self-explanatory and you can assess your learning abilities with them.

6. What is the Price for NCERT Class 8 Science Solutions?

You can access the NCERT Class 8 Science Solutions from our web page free of cost. Have an indepth knowledge of science concepts by referring to the NCERT Textbooks.

More CBSE Class 8 Study Material

• NCERT Solutions for Class 8 Maths
• NCERT Solutions for Class 8 Social Science
• NCERT Solutions for Class 8 English
• NCERT Solutions for Class 8 English Honeydew
• NCERT Solutions for Class 8 English It So Happened
• NCERT Solutions for Class 8 Hindi
• NCERT Solutions for Class 8 Sanskrit

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Science experiments you can do at home!  Explore an ever growing list of hundreds of fun and easy science experiments. Have fun trying these experiments at home or use them for science fair project ideas. Explore experiments by category, newest experiments, most popular experiments, easy at home experiments, or simply scroll down this page for tons of awesome experiment ideas!

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37 Cool Science Experiments for Kids to Do at Home

General Education

Are you looking for cool science experiments for kids at home or for class? We've got you covered! We've compiled a list of 37 of the best science experiments for kids that cover areas of science ranging from outer space to dinosaurs to chemical reactions. By doing these easy science experiments, kids will make their own blubber and see how polar bears stay warm, make a rain cloud in a jar to observe how weather changes, create a potato battery that'll really power a lightbulb, and more.

Below are 37 of the best science projects for kids to try. For each one we include a description of the experiment, which area(s) of science it teaches kids about, how difficult it is (easy/medium/hard), how messy it is (low/medium/high), and the materials you need to do the project. Note that experiments labelled "hard" are definitely still doable; they just require more materials or time than most of these other science experiments for kids.

#1: Insect Hotels

• Teaches Kids About: Zoology
• Difficulty Level: Medium
• Messiness Level: Medium

Insect hotels can be as simple (just a few sticks wrapped in a bundle) or as elaborate as you'd like, and they're a great way for kids to get creative making the hotel and then get rewarded by seeing who has moved into the home they built. After creating a hotel with hiding places for bugs, place it outside (near a garden is often a good spot), wait a few days, then check it to see who has occupied the "rooms." You can also use a bug ID book or app to try and identify the visitors.

• Materials Needed
• Shadow box or other box with multiple compartments
• Hot glue gun with glue
• Sticks, bark, small rocks, dried leaves, bits of yarn/wool, etc.

#2: DIY Lava Lamp

• Teaches Kids About: Chemical reactions
• Difficulty Level: Easy

In this quick and fun science experiment, kids will mix water, oil, food coloring, and antacid tablets to create their own (temporary) lava lamp . Oil and water don't mix easily, and the antacid tablets will cause the oil to form little globules that are dyed by the food coloring. Just add the ingredients together and you'll end up with a homemade lava lamp!

• Vegetable oil
• Food coloring
• Antacid tablets

#3: Magnetic Slime

• Teaches Kids About: Magnets
• Messiness Level: High (The slime is black and will slightly dye your fingers when you play with it, but it washes off easily.)

A step up from silly putty and Play-Doh, magnetic slime is fun to play with but also teaches kids about magnets and how they attract and repel each other. Some of the ingredients you aren't likely to have around the house, but they can all be purchased online. After mixing the ingredients together, you can use the neodymium magnet (regular magnets won't be strong enough) to make the magnetic slime move without touching it!

• Liquid starch
• Adhesive glue
• Iron oxide powder
• Neodymium (rare earth) magnet

#4: Baking Soda Volcanoes

• Teaches Kids About: Chemical reactions, earth science
• Difficulty Level: Easy-medium
• Messiness Level: High

Baking soda volcanoes are one of the classic science projects for kids, and they're also one of the most popular. It's hard to top the excitement of a volcano erupting inside your home. This experiment can also be as simple or in-depth as you like. For the eruption, all you need is baking soda and vinegar (dishwashing detergent adds some extra power to the eruption), but you can make the "volcano" as elaborate and lifelike as you wish.

• Baking soda
• Dishwashing detergent
• Large mason jar or soda bottle
• Playdough or aluminum foil to make the "volcano"
• Additional items to place around the volcano (optional)
• Food coloring (optional)

#5: Tornado in a Jar

• Teaches Kids About: Weather
• Messiness Level: Low

This is one of the quick and easy and science experiments for kids to teach them about weather. It only takes about five minutes and a few materials to set up, but once you have it ready you and your kids can create your own miniature tornado whose vortex you can see and the strength of which you can change depending on how quickly you swirl the jar.

• Glitter (optional)

#6: Colored Celery Experiment

• Teaches Kids About: Plants

This celery science experiment is another classic science experiment that parents and teachers like because it's easy to do and gives kids a great visual understanding of how transpiration works and how plants get water and nutrients. Just place celery stalks in cups of colored water, wait at least a day, and you'll see the celery leaves take on the color of the water. This happens because celery stalks (like other plants) contain small capillaries that they use to transport water and nutrients throughout the plant.

• Celery stalks (can also use white flowers or pale-colored cabbage)

#7: Rain Cloud in a Jar

This experiment teaches kids about weather and lets them learn how clouds form by making their own rain cloud . This is definitely a science project that requires adult supervision since it uses boiling water as one of the ingredients, but once you pour the water into a glass jar, the experiment is fast and easy, and you'll be rewarded with a little cloud forming in the jar due to condensation.

• Glass jar with a lid
• Boiling water
• Aerosol hairspray

#8: Edible Rock Candy

• Teaches Kids About: Crystal formation

It takes about a week for the crystals of this rock candy experiment to form, but once they have you'll be able to eat the results! After creating a sugar solution, you'll fill jars with it and dangle strings in them that'll slowly become covered with the crystals. This experiment involves heating and pouring boiling water, so adult supervision is necessary, once that step is complete, even very young kids will be excited to watch crystals slowly form.

• Large saucepan
• Clothespins
• String or small skewers
• Candy flavoring (optional)

#9: Water Xylophone

• Teaches Kids About: Sound waves

With just some basic materials you can create your own musical instrument to teach kids about sound waves. In this water xylophone experiment , you'll fill glass jars with varying levels of water. Once they're all lined up, kids can hit the sides with wooden sticks and see how the itch differs depending on how much water is in the jar (more water=lower pitch, less water=higher pitch). This is because sound waves travel differently depending on how full the jars are with water.

• Wooden sticks/skewers

#10: Blood Model in a Jar

• Teaches Kids About: Human biology

This blood model experiment is a great way to get kids to visual what their blood looks like and how complicated it really is. Each ingredient represents a different component of blood (plasma, platelets, red blood cells, etc.), so you just add a certain amount of each to the jar, swirl it around a bit, and you have a model of what your blood looks like.

• Empty jar or bottle
• Red cinnamon candies
• Marshmallows or dry white lima beans
• White sprinkles

#11: Potato Battery

• Teaches Kids About: Electricity
• Difficulty Level: Hard

Did you know that a simple potato can produce enough energy to keep a light bulb lit for over a month? You can create a simple potato battery to show kids. There are kits that provide all the necessary materials and how to set it up, but if you don't purchase one of these it can be a bit trickier to gather everything you need and assemble it correctly. Once it's set though, you'll have your own farm grown battery!

• Fresh potato
• Galvanized nail
• Copper coin

#12: Homemade Pulley

• Teaches Kids About: Simple machines

This science activity requires some materials you may not already have, but once you've gotten them, the homemade pulley takes only a few minutes to set up, and you can leave the pulley up for your kids to play with all year round. This pulley is best set up outside, but can also be done indoors.

• Clothesline
• 2 clothesline pulleys

#13: Light Refraction

• Teaches Kids About: Light

This light refraction experiment takes only a few minutes to set up and uses basic materials, but it's a great way to show kids how light travels. You'll draw two arrows on a sticky note, stick it to the wall, then fill a clear water bottle with water. As you move the water bottle in front of the arrows, the arrows will appear to change the direction they're pointing. This is because of the refraction that occurs when light passes through materials like water and plastic.

• Sticky note
• Transparent water bottle

#14: Nature Journaling

• Teaches Kids About: Ecology, scientific observation

A nature journal is a great way to encourage kids to be creative and really pay attention to what's going on around them. All you need is a blank journal (you can buy one or make your own) along with something to write with. Then just go outside and encourage your children to write or draw what they notice. This could include descriptions of animals they see, tracings of leaves, a drawing of a beautiful flower, etc. Encourage your kids to ask questions about what they observe (Why do birds need to build nests? Why is this flower so brightly colored?) and explain to them that scientists collect research by doing exactly what they're doing now.

• Blank journal or notebook
• Pens/pencils/crayons/markers
• Tape or glue for adding items to the journal

#15: DIY Solar Oven

• Teaches Kids About: Solar energy

This homemade solar oven definitely requires some adult help to set up, but after it's ready you'll have your own mini oven that uses energy from the sun to make s'mores or melt cheese on pizza. While the food is cooking, you can explain to kids how the oven uses the sun's rays to heat the food.

• Aluminum foil
• Knife or box cutter
• Permanent marker
• Plastic cling wrap
• Black construction paper

#16: Animal Blubber Simulation

• Teaches Kids About: Ecology, zoology

If your kids are curious about how animals like polar bears and seals stay warm in polar climates, you can go beyond just explaining it to them; you can actually have them make some of their own blubber and test it out. After you've filled up a large bowl with ice water and let it sit for a few minutes to get really cold, have your kids dip a bare hand in and see how many seconds they can last before their hand gets too cold. Next, coat one of their fingers in shortening and repeat the experiment. Your child will notice that, with the shortening acting like a protective layer of blubber, they don't feel the cold water nearly as much.

• Bowl of ice water

#17: Static Electricity Butterfly

This experiment is a great way for young kids to learn about static electricity, and it's more fun and visual than just having them rub balloons against their heads. First you'll create a butterfly, using thick paper (such as cardstock) for the body and tissue paper for the wings. Then, blow up the balloon, have the kids rub it against their head for a few seconds, then move the balloon to just above the butterfly's wings. The wings will move towards the balloon due to static electricity, and it'll look like the butterfly is flying.

• Tissue paper
• Thick paper
• Glue stick/glue

#18: Edible Double Helix

• Teaches Kids About: Genetics

If your kids are learning about genetics, you can do this edible double helix craft to show them how DNA is formed, what its different parts are, and what it looks like. The licorice will form the sides or backbone of the DNA and each color of marshmallow will represent one of the four chemical bases. Kids will be able to see that only certain chemical bases pair with each other.

• 2 pieces of licorice
• 12 toothpicks
• Small marshmallows in 4 colors (9 of each color)
• 5 paperclips

#19: Leak-Proof Bag

• Teaches Kids About: Molecules, plastics

This is an easy experiment that'll appeal to kids of a variety of ages. Just take a zip-lock bag, fill it about ⅔ of the way with water, and close the top. Next, poke a few sharp objects (like bamboo skewers or sharp pencils) through one end and out the other. At this point you may want to dangle the bag above your child's head, but no need to worry about spills because the bag won't leak? Why not? It's because the plastic used to make zip-lock bags is made of polymers, or long chains of molecules that'll quickly join back together when they're forced apart.

• Zip-lock bags
• Objects with sharp ends (pencils, bamboo skewers, etc.)

#20: How Do Leaves Breathe?

• Teaches Kids About: Plant science

It takes a few hours to see the results of this leaf experiment , but it couldn't be easier to set up, and kids will love to see a leaf actually "breathing." Just get a large-ish leaf, place it in a bowl (glass works best so you can see everything) filled with water, place a small rock on the leaf to weigh it down, and leave it somewhere sunny. Come back in a few hours and you'll see little bubbles in the water created when the leaf releases the oxygen it created during photosynthesis.

• Large bowl (preferably glass)
• Magnifying glass (optional)

#21: Popsicle Stick Catapults

Kids will love shooting pom poms out of these homemade popsicle stick catapults . After assembling the catapults out of popsicle sticks, rubber bands, and plastic spoons, they're ready to launch pom poms or other lightweight objects. To teach kids about simple machines, you can ask them about how they think the catapults work, what they should do to make the pom poms go a farther/shorter distance, and how the catapult could be made more powerful.

• Popsicle sticks
• Rubber bands
• Plastic spoons
• Paint (optional)

#22: Elephant Toothpaste

You won't want to do this experiment near anything that's difficult to clean (outside may be best), but kids will love seeing this " elephant toothpaste " crazily overflowing the bottle and oozing everywhere. Pour the hydrogen peroxide, food coloring, and dishwashing soap into the bottle, and in the cup mix the yeast packet with some warm water for about 30 seconds. Then, add the yeast mixture to the bottle, stand back, and watch the solution become a massive foamy mixture that pours out of the bottle! The "toothpaste" is formed when the yeast removed the oxygen bubbles from the hydrogen peroxide which created foam. This is an exothermic reaction, and it creates heat as well as foam (you can have kids notice that the bottle became warm as the reaction occurred).

• Clean 16-oz soda bottle
• 6% solution of hydrogen peroxide
• 1 packet of dry yeast
• Dishwashing soap

#23: How Do Penguins Stay Dry?

Penguins, and many other birds, have special oil-producing glands that coat their feathers with a protective layer that causes water to slide right off them, keeping them warm and dry. You can demonstrate this to kids with this penguin craft by having them color a picture of a penguin with crayons, then spraying the picture with water. The wax from the crayons will have created a protective layer like the oil actual birds coat themselves with, and the paper won't absorb the water.

• Penguin image (included in link)
• Spray bottle
• Blue food coloring (optional)

#24: Rock Weathering Experiment

• Teaches Kids About: Geology

This mechanical weathering experiment teaches kids why and how rocks break down or erode. Take two pieces of clay, form them into balls, and wrap them in plastic wrap. Then, leave one out while placing the other in the freezer overnight. The next day, unwrap and compare them. You can repeat freezing the one piece of clay every night for several days to see how much more cracked and weathered it gets than the piece of clay that wasn't frozen. It may even begin to crumble. This weathering also happens to rocks when they are subjected to extreme temperatures, and it's one of the causes of erosion.

• Plastic wrap

#25: Saltwater Density

• Teaches Kids About: Water density

For this saltwater density experiment , you'll fill four clear glasses with water, then add salt to one glass, sugar to one glass, and baking soda to one glass, leaving one glass with just water. Then, float small plastic pieces or grapes in each of the glasses and observe whether they float or not. Saltwater is denser than freshwater, which means some objects may float in saltwater that would sink in freshwater. You can use this experiment to teach kids about the ocean and other bodies of saltwater, such as the Dead Sea, which is so salty people can easily float on top of it.

• Four clear glasses
• Lightweight plastic objects or small grapes

#26: Starburst Rock Cycle

With just a package of Starbursts and a few other materials, you can create models of each of the three rock types: igneous, sedimentary, and metamorphic. Sedimentary "rocks" will be created by pressing thin layers of Starbursts together, metamorphic by heating and pressing Starbursts, and igneous by applying high levels of heat to the Starbursts. Kids will learn how different types of rocks are forms and how the three rock types look different from each other.

• Toaster oven

#27: Inertia Wagon Experiment

• Teaches Kids About: Inertia

This simple experiment teaches kids about inertia (as well as the importance of seatbelts!). Take a small wagon, fill it with a tall stack of books, then have one of your children pull it around then stop abruptly. They won't be able to suddenly stop the wagon without the stack of books falling. You can have the kids predict which direction they think the books will fall and explain that this happens because of inertia, or Newton's first law.

• Stack of books

#28: Dinosaur Tracks

• Teaches Kids About: Paleontology

How are some dinosaur tracks still visible millions of years later? By mixing together several ingredients, you'll get a claylike mixture you can press your hands/feet or dinosaur models into to make dinosaur track imprints . The mixture will harden and the imprints will remain, showing kids how dinosaur (and early human) tracks can stay in rock for such a long period of time.

• Used coffee grounds
• Wooden spoon
• Rolling pin

#29: Sidewalk Constellations

• Teaches Kids About: Astronomy

If you do this sidewalk constellation craft , you'll be able to see the Big Dipper and Orion's Belt in the daylight. On the sidewalk, have kids draw the lines of constellations (using constellation diagrams for guidance) and place stones where the stars are. You can then look at astronomy charts to see where the constellations they drew will be in the sky.

• Sidewalk chalk
• Small stones
• Diagrams of constellations

#30: Lung Model

By building a lung model , you can teach kids about respiration and how their lungs work. After cutting off the bottom of a plastic bottle, you'll stretch a balloon around the opened end and insert another balloon through the mouth of the bottle. You'll then push a straw through the neck of the bottle and secure it with a rubber band and play dough. By blowing into the straw, the balloons will inflate then deflate, similar to how our lungs work.

• Plastic bottle
• Rubber band

#31: Homemade Dinosaur Bones

By mixing just flour, salt, and water, you'll create a basic salt dough that'll harden when baked. You can use this dough to make homemade dinosaur bones and teach kids about paleontology. You can use books or diagrams to learn how different dinosaur bones were shaped, and you can even bury the bones in a sandpit or something similar and then excavate them the way real paleontologists do.

• Images of dinosaur bones

#32: Clay and Toothpick Molecules

There are many variations on homemade molecule science crafts . This one uses clay and toothpicks, although gumdrops or even small pieces of fruit like grapes can be used in place of clay. Roll the clay into balls and use molecule diagrams to attach the clay to toothpicks in the shape of the molecules. Kids can make numerous types of molecules and learn how atoms bond together to form molecules.

• Clay or gumdrops (in four colors)
• Diagrams of molecules

#33: Articulated Hand Model

By creating an articulated hand model , you can teach kids about bones, joints, and how our hands are able to move in many ways and accomplish so many different tasks. After creating a hand out of thin foam, kids will cut straws to represent the different bones in the hand and glue them to the fingers of the hand models. You'll then thread yarn (which represents tendons) through the straws, stabilize the model with a chopstick or other small stick, and end up with a hand model that moves and bends the way actual human hands do.

• Straws (paper work best)
• Twine or yarn

#34: Solar Energy Experiment

• Teaches Kids About: Solar energy, light rays

This solar energy science experiment will teach kids about solar energy and how different colors absorb different amounts of energy. In a sunny spot outside, place six colored pieces of paper next to each other, and place an ice cube in the middle of each paper. Then, observe how quickly each of the ice cubes melt. The ice cube on the black piece of paper will melt fastest since black absorbs the most light (all the light ray colors), while the ice cube on the white paper will melt slowest since white absorbs the least light (it instead reflects light). You can then explain why certain colors look the way they do. (Colors besides black and white absorb all light except for the one ray color they reflect; this is the color they appear to us.)

• 6 squares of differently colored paper/cardstock (must include black paper and white paper)

#35: How to Make Lightning

• Teaches Kids About: Electricity, weather

You don't need a storm to see lightning; you can actually create your own lightning at home . For younger kids this experiment requires adult help and supervision. You'll stick a thumbtack through the bottom of an aluminum tray, then stick the pencil eraser to the pushpin. You'll then rub the piece of wool over the aluminum tray, and then set the tray on the Styrofoam, where it'll create a small spark/tiny bolt of lightning!

• Pencil with eraser
• Aluminum tray or pie tin
• Styrofoam tray

#36: Tie-Dyed Milk

• Teaches Kids About: Surface tension

For this magic milk experiment , partly fill a shallow dish with milk, then add a one drop of each food coloring color to different parts of the milk. The food coloring will mostly stay where you placed it. Next, carefully add one drop of dish soap to the middle of the milk. It'll cause the food coloring to stream through the milk and away from the dish soap. This is because the dish soap breaks up the surface tension of the milk by dissolving the milk's fat molecules.

• Shallow dish
• Milk (high-fat works best)

#37: How Do Stalactites Form?

Have you ever gone into a cave and seen huge stalactites hanging from the top of the cave? Stalactites are formed by dripping water. The water is filled with particles which slowly accumulate and harden over the years, forming stalactites. You can recreate that process with this stalactite experiment . By mixing a baking soda solution, dipping a piece of wool yarn in the jar and running it to another jar, you'll be able to observe baking soda particles forming and hardening along the yarn, similar to how stalactites grow.

• Safety pins
• 2 glass jars

Summary: Cool Science Experiments for Kids

Any one of these simple science experiments for kids can get children learning and excited about science. You can choose a science experiment based on your child's specific interest or what they're currently learning about, or you can do an experiment on an entirely new topic to expand their learning and teach them about a new area of science. From easy science experiments for kids to the more challenging ones, these will all help kids have fun and learn more about science.

What's Next?

Are you also interested in pipe cleaner crafts for kids? We have a guide to some of the best pipe cleaner crafts to try!

Looking for multiple different slime recipes? We tell you how to make slimes without borax and without glue as well as how to craft the ultimate super slime .

Want to learn more about clouds? Learn how to identify every cloud in the sky with our guide to the 10 types of clouds .

Want to know the fastest and easiest ways to convert between Fahrenheit and Celsius? We've got you covered! Check out our guide to the best ways to convert Celsius to Fahrenheit (or vice versa) .

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Christine graduated from Michigan State University with degrees in Environmental Biology and Geography and received her Master's from Duke University. In high school she scored in the 99th percentile on the SAT and was named a National Merit Finalist. She has taught English and biology in several countries.

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45 Easy Science Experiments for Kids

Hello, STEM! These simple DIY activities can be done at home or in school.

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Imagine blowing the biggest bubbles imaginable — or even making bubbles within bubbles. Or sending vessels — rockets, tea bags, airplanes — soaring through the sky for impossible distances. Now imagine making things explode, or change colors, or reveal hidden messages with just a few simple mixtures.

First off, it's good to start them off with the scientific method. Give them a journal to record their observations, questions, hypotheses, experiments, results and conclusions. As always, safety counts: wear goggles and coats or aprons if need be (sometimes kids get a kick out of how scientific the protective gear makes them look), and always make sure that the kids are supervised when doing them. (Warning: Some of these are messy!)

These experiments are mostly designed for preschoolers through elementary schoolers — with a couple that are either demonstrations or better for older kids — but if you have a younger one, you can check out these 1-year-old learning activities , toddler learning activities and preschool/kindergarten learning activities , some of which also cover STEM subjects.

Floating Fish

Here's another one that deals with solubility and density.

• Draw the outline of a fish on the bottom of a glass plate or tray in dry-erase marker. Retrace your drawing to make sure all the lines are connected. Let dry for a minute or two.
• Fill the measuring cup with tap water. Place the pour spout just inside the corner of the dish and add water very slowly until it just covers the bottom. Be careful not to pour water directly onto your drawing or make splashes near it. The water will move toward your drawing, eventually surrounding it. Observe what happens. If the water splashes or it doesn’t work on your first try, empty the dish, erase the drawing with a paper towel, dry off the dish, and try again.
• Tilt the dish slightly from side to side. What happens? Jot it down.

The ink in dry erase markers is engineered to be slippery. It’s made with a chemical that causes it to easily release from surfaces. (Permanent markers are made with a chemical that makes the ink stick to surfaces, so be sure not to use these in your experiment!)

The easy-release ink lets go from a surface, but why does it float? There are two reasons. First, dry erase ink isn’t soluble, which means it won’t dissolve in water. Second, dry erase ink is less dense than the water, so it becomes buoyant, meaning it can float. When you tilt the dish, the fish moves around on the water’s surface.

From Good Housekeeping Amazing Science: 83 Hands-on S.T.E.A.M Experiments for Curious Kids! See more in the book »

Brush, Brush!

This one will really get them into brushing their teeth once they scientifically prove all the good things that toothpaste can do.

• Write on sticky notes: Soda 1, Soda 2, Juice 1, and Juice 2. Place them in a row on a counter.
• Fill two glasses halfway with brown soda and place behind the Soda 1 and Soda 2 sticky notes. Fill two glasses halfway with lemon juice and place behind the Juice 1 and Juice 2 sticky notes.
• Carefully place one egg in the bowl. Squeeze a big dollop — about one tablespoon — of toothpaste on top of the egg and gently rub the toothpaste all around with your hands until the egg is completely covered in a thick layer of toothpaste. Repeat with a second egg.
• Gently submerge the toothpaste-covered eggs into the liquids: one egg in the glass labeled Soda 1 and the other egg in the glass labeled Juice 1. Wash and dry your hands.
• Gently submerge the remaining eggs, without toothpaste on them, in the remaining glasses: one in the glass labeled Soda 2 and the other in the glass of juice labeled Juice 2. Wash and dry your hands. Leave the eggs in the glasses for 12 hours.
• After 12 hours, remove the eggs from the glasses of soda one at a time. Rinse them in cool water and pat them dry with the towel. Place each egg by the sticky note of the glass it was in. Are the eggs the same or different colors?
• Remove the eggs from the glasses of juice one at a time. Rinse them under the faucet and pat them dry. Place each egg by the sticky note of the glass it was in. Feel the eggs gently. Does one feel stronger or weaker than the other?
• Write down your observations in your science notebook.

The eggshells in this experiment represent the enamel (outer coating) on your teeth. Toothpaste cleans your teeth and prevents stains: it removes food and drink particles that are stuck on your teeth. Teeth can be stained easily by dark-colored liquids like cola, coffee or tea. The egg without toothpaste will be brown and discolored. The egg covered in toothpaste was protected from turning brown.

Toothpaste also protects your pearly whites from decay (breaking down). The egg without toothpaste left in the lemon juice was worn down and soft to the touch, while the egg that was protected with toothpaste is stronger. The lemon juice is acidic, and those acids broke down the shell just as acidic drinks can wear away your tooth enamel. When a tooth is worn down, a cavity can form more easily. But the fluoride in toothpaste mixes with your saliva to create a protective coating around your tooth enamel. It helps keep your teeth strong and cavity-free.

Grow an Avocado Tree

For an easy lesson in Earth Science, your family can grow an avocado tree from a pit. You can buy an AvoSeedo kit , or just peel the seed and suspend it over water with toothpicks.

Get the tutorial »

Milk Bottle Xylophone

No for an experiment in sound!

• Arrange six glass jars or bottles, all the same size with no lids, in a line. What will each jar sound like when you tap it with a spoon? Make a prediction, then tap each jar. Record your observations.
• Next, put water in each of the jars. Pour 1⁄4 cup (60 ml) of water into the first jar. Add 1⁄2 cup (120 ml) of water to the second jar. Continue in 1⁄4-cup increments, adding 3⁄4 cup (180 ml) of water to the third jar, 1 cup (240 ml) of water to the fourth jar, 11⁄4 cups (300 ml) of water to the fifth jar, and 11⁄2 cups (360 ml) to the sixth jar. Add a couple of drops of food coloring to each jar.
• What will each jar sound like? Will they sound the same or different than when the container was empty? Will they sound the same or different from one another? Record your predictions.
• Tap each jar with a metal spoon. Write down your observations about each jar’s pitch (how high or low a sound is) in your notebook.

Sound waves are created by vibrations, which are back-and-forth movements that are repeated again and again. Pitch depends on the frequency of the waves — how many are created each second. A high pitch is created by high-frequency sound waves, and can sound squeaky. A low pitch is created by low-frequency sound waves, and sounds deep and booming.

When you tapped the jar, it vibrated. The vibrations traveled from the jar to the water to the air and eventually to your ears. The jars with more water had a low pitch. The sound waves vibrated more slowly because they had more water to travel through. The jars with less water had higher pitches. The sound waves vibrated faster because they had less water to travel through. A jar with no water in it makes the highest pitch because it has the least substance to travel through.

"Elephant Toothpaste"

Okay, elephants don't really brush with this stuff, which is made from a chemical reaction between hydrogen peroxide, yeast, dish soap and a few other simple ingredients. But this experiment has a big "wow" factor since, when the substances are mixed, the "toothpaste" foams out of the bottle. You can use it to teach kids about catalysts and exothermic reactions.

Get the tutorial at Babble Dabble Do »

DIY Compass

Explore the way magnetism works, and how it affects everyday objects, by magnetizing a needle and making a DIY compass. You can even spin the compass in the water, and it'll end up pointing the right way again.

Get the tutorial at STEAM Powered Family »

Craft Stick Chain Reaction

Kids can learn about the differences between potential and kinetic energy with this chain reaction. It makes a big impact: Once the tension is released, the pom poms go flying through the air!

Get the the tutorial at Science Sparks »

Color-Changing Invisible Ink

Kids will feel like super-spies when they use this heatless method to reveal pictures or colors written with "invisible ink." You can try different acid/base combinations to see which one makes the most dramatic result.

Get the tutorial at Research Parent »

Paper Bridge

Get the engineering back into STEM with this activity, which challenges kids to create a paper bridge that's strong enough to hold as many pennies as possible. How can they manipulate the paper to make it sturdier? (Hint: Fold it!)

See the paper bridge tutorial at KidsActivities.com »

Challenge your little scientist to lift up an ice cube with just a piece of string. It's possible ... with a little salt to help. Salt melts the ice and lowers the freezing point of the ice cube, which absorbs the heat from the water around it, making the water cold enough to re-freeze around the string.

Get the tutorial at Playdough to Plato »

Marshmallow Catapult

Another lesson in potential and kinetic energy, kids will love sending mini marshmallows flying in the name of science. Change some of the variables and see how that affects the marshmallow's trajectory.

Get the tutorial at Hello, Wonderful »

Leaf Breathing

It's hard for kids to picture how plants and trees "breathe" through their leaves — until they see the bubbles appear on a leaf that's submerged in water. You can also teach them about photosynthesis by putting different leaves in different spots with varying levels of sunlight.

Get the tutorial at KC EDventures »

Hoop-and-Straw Airplane

We all remember how to fold those classic, triangular paper airplanes, but these hoop-and-straw airplanes fly way better (and straighter). Experiment by changing the length of the straw and the size of the hoops and see how it affects the flight.

Get the tutorial at Mombrite »

Film Canister Rocket

Blast off! You don't need jet fuel to make these rockets go, just Alka-Seltzer tablets and baking soda, but they'll be amazed when they achieve lift-off! (Note: If you can't find old film canisters, tubes of Airborne work, too.)

Get the tutorial at Raising Lifelong Learners »

Coin Inertia

Stack up about five or so coins on a piece of cardboard and place it over a glass of water. Then, flick the cardboard out from on top of the glass. Do the coins drop into the water, or ride with the cardboard? Due to inertia, they drop into the water — a very visual (and fun!) demonstration of Newton's First Law of Motion.

Get the tutorial at Engineering Emily »

Apple Oxidation

What works best for keeping an apple from turning brown? Test to find out! Slice up an apple, and let each slice soak in a different liquid. Then take them out, lay them on a tray, and check the brownness after three minutes, six minutes and so on. Not only does this test the properties of different liquids, it also helps students practice the scientific method if they create hypotheses about which liquids would be most effective.

Get the tutorial at Jennifer Findley »

RELATED: 50 Fun Activities for Kids Will Keep Them Entertained for Hours

Coffee Ground Fossils

By making a salt dough with coffee grounds and pressing various shapes into it (toy dinosaur feet, seashells), kids can get a better understanding of how fossils are made. If you poke a hole in the top before it dries, the kids can hang their "fossils" up in their rooms.

Get the tutorial at Crafts by Amanda »

Chromatography Flowers

Chromatography is the process of separating a solution into different parts — like the pigments in the ink used in markers. If you draw stripes around a coffee filter, then fold it up and dip the tip in water, the water will travel up the filter and separate the marker ink into its different pigments (in cool patterns that you can display as a craft project). This family made the end-result even brighter by adding an LED circuit to the center.

Get the tutorial at Steam Powered Family »

Water Walking

You'll need six containers of water for this one: three with clear water, one with red food coloring, one with blue coloring, and one with yellow coloring. Arrange them in a circle, alternating colored and clear containers, and make bridges between the containers with folded paper towels. Your kids will be amazed to see the colored water "walk" over the bridges and into the clear containers, mixing colors, and giving them a first-hand look at the magic of capillarity.

Get the tutorial at Fun Learning for Kids »

Sunscreen Test

This experiment puts the A (art) in STEAM: Paint different designs on construction paper with different sunscreens, leave the papers out in the sun and compare the results. Then, hang your "conclusions" on your fridge.

Get the tutorial at Tonya Staab »

Marisa (she/her) has covered all things parenting, from the postpartum period through the empty nest, for Good Housekeeping since 2018; she previously wrote about parents and families at Parents and Working Mother . She lives with her husband and daughter in Brooklyn, where she can be found dominating the audio round at her local bar trivia night or tweeting about movies.

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Over the last decade, replication research in the psychological sciences has become more visible. One way that replication research can be conducted is to compare the results of the replication study with the original study to look for consistency, that is to say, to evaluate whether the original study is “replicable.” Unfortunately, many popular and readily accessible methods for ascertaining replicability, such as comparing significance levels across studies or eyeballing confidence intervals, are generally ill suited to the task of comparing results across studies. To address this issue, we present the prediction interval as a statistic that is effective for determining whether a replication study is inconsistent with the original study. We review the statistical rationale for prediction intervals, demonstrate hand calculations, and provide a walkthrough using an R package for obtaining prediction intervals for means, d values, and correlations. To aid the effective adoption of prediction intervals, we provide guidance on the correct interpretation of results when using prediction intervals in replication research.   

Interacting With Curves: How to Validly Test and Probe Interactions in the Real (Nonlinear) World Uri Simonsohn

Hypotheses involving interactions in which one variable modifies the association between another two are very common. They are typically tested relying on models that assume effects are linear, for example, with a regression like y = a + b x + c z + d x × z. In the real world, however, few effects are linear, invalidating inferences about interactions. For instance, in realistic situations, the false-positive rate can be 100% for detecting an interaction, and a probed interaction can reliably produce estimated effects of the wrong sign. In this article, I propose a revised toolbox for studying interactions in a curvilinear-robust manner, giving correct answers “even” when effects are not linear. It is applicable to most study designs and produces results that are analogous to those of current—often invalid—practices. The presentation combines statistical intuition, demonstrations with published results, and simulations. 

Performing Small-Telescopes Analysis by Resampling: Empirically Constructing Confidence Intervals and Estimating Statistical Power for Measures of Effect Size Samantha Costigan, John Ruscio, Jarret T. Crawford    

When new data are collected to check the findings of an original study, it can be challenging to evaluate replication results. The small-telescopes method is designed to assess not only whether the effect observed in the replication study is statistically significant but also whether this effect is large enough to have been detected in the original study. Unless both criteria are met, the replication either fails to support the original findings or the results are mixed. When implemented in the conventional manner, this small-telescopes method can be impractical or impossible to conduct, and doing so often requires parametric assumptions that may not be satisfied. We present an empirical approach that can be used for a variety of study designs and data-analytic techniques. The empirical approach to the small-telescopes method is intended to extend its reach as a tool for addressing the replication crisis by evaluating findings in psychological science and beyond. In the present tutorial, we demonstrate this approach using a Shiny app and R code and included an analysis of most studies (95%) replicated as part of the Open Science Collaboration’s Reproducibility Project in Psychology. In addition to its versatility, simulations demonstrate the accuracy and precision of the empirical approach to implementing small-telescopes analysis.   

Diagnosing the Misuse of the Bayes Factor in Applied Research Jorge N. Tendeiro, Henk A. L. Kiers, Rink Hoekstra, Tsz Keung Wong, Richard D. Morey    

Hypothesis testing is often used for inference in the social sciences. In particular, null hypothesis significance testing (NHST) and its p value have been ubiquitous in published research for decades. Much more recently, null hypothesis Bayesian testing (NHBT) and its Bayes factor have also started to become more commonplace in applied research. Following preliminary work by Wong and colleagues, we investigated how, and to what extent, researchers misapply the Bayes factor in applied psychological research by means of a literature study. Based on a final sample of 167 articles, our results indicate that, not unlike NHST and the [Formula: see text] value, the use of NHBT and the Bayes factor also shows signs of misconceptions. We consider the root causes of the identified problems and provide suggestions to improve the current state of affairs. This article is aimed to assist researchers in drawing the best inferences possible while using NHBT and the Bayes factor in applied research.   

Careless Responding: Why Many Findings Are Spurious or Spuriously Inflated Morgan D. Stosic, Brett A. Murphy, Fred Duong, Amber A. Fultz, Summer E. Harvey, Frank Bernieri    

Contrary to long-standing conventional wisdom, failing to exclude data from carelessly responding participants on questionnaires or behavioral tasks will frequently result in false-positive or spuriously inflated findings. Despite prior publications demonstrating this disturbing statistical confound, it continues to be widely underappreciated by most psychologists, including highly experienced journal editors. In this article, we aim to comprehensively explain and demonstrate the severity and widespread prevalence of careless responding’s (CR) inflationary effects in psychological research. We first describe when and why one can expect to observe the inflationary effect of unremoved CR data in a manner accessible to early graduate or advanced undergraduate students. To this end, we provide an online simulator tool and instructional videos for use in classrooms. We then illustrate realistic magnitudes of the severity of unremoved CR data by presenting novel reanalyses of data sets from three high-profile articles: We found that many of their published effects would have been meaningfully, sometimes dramatically, inflated if they had not rigorously screened out CR data. To demonstrate the frequency with which researchers fail to adequately screen for CR, we then conduct a systematic review of CR screening procedures in studies using paid online samples (e.g., MTurk) published across two prominent psychological-science journals. These findings suggest that most researchers either did not conduct any kind of CR screening or conducted only bare minimal screening. To help researchers avoid publishing spuriously inflated findings, we summarize best practices to help mitigate the threats of CR data.   

A Tutorial on Analyzing Ecological Momentary Assessment Data in Psychological Research With Bayesian (Generalized) Mixed-Effects Models Jonas Dora, Connor J. McCabe, Caspar J. van Lissa, Katie Witkiewitz, Kevin M. King    

In this tutorial, we introduce the reader to analyzing ecological momentary assessment (EMA) data as applied in psychological sciences with the use of Bayesian (generalized) linear mixed-effects models. We discuss practical advantages of the Bayesian approach over frequentist methods and conceptual differences. We demonstrate how Bayesian statistics can help EMA researchers to (a) incorporate prior knowledge and beliefs in analyses, (b) fit models with a large variety of outcome distributions that reflect likely data-generating processes, (c) quantify the uncertainty of effect-size estimates, and (d) quantify the evidence for or against an informative hypothesis. We present a workflow for Bayesian analyses and provide illustrative examples based on EMA data, which we analyze using (generalized) linear mixed-effects models to test whether daily self-control demands predict three different alcohol outcomes. All examples are reproducible, and data and code are available at https://osf.io/rh2sw/ . Having worked through this tutorial, readers should be able to adopt a Bayesian workflow to their own analysis of EMA data.   

The Causal Cookbook: Recipes for Propensity Scores, G-Computation, and Doubly Robust Standardization Arthur Chatton, Julia M. Rohrer    

Recent developments in the causal-inference literature have renewed psychologists’ interest in how to improve causal conclusions based on observational data. A lot of the recent writing has focused on concerns of causal identification (under which conditions is it, in principle, possible to recover causal effects?); in this primer, we turn to causal estimation (how do researchers actually turn the data into an effect estimate?) and modern approaches to it that are commonly used in epidemiology. First, we explain how causal estimands can be defined rigorously with the help of the potential-outcomes framework, and we highlight four crucial assumptions necessary for causal inference to succeed (exchangeability, positivity, consistency, and noninterference). Next, we present three types of approaches to causal estimation and compare their strengths and weaknesses: propensity-score methods (in which the independent variable is modeled as a function of controls), g-computation methods (in which the dependent variable is modeled as a function of both controls and the independent variable), and doubly robust estimators (which combine models for both independent and dependent variables). A companion R Notebook is available at github.com/ArthurChatton/CausalCookbook . We hope that this nontechnical introduction not only helps psychologists and other social scientists expand their causal toolbox but also facilitates communication across disciplinary boundaries when it comes to causal inference, a research goal common to all fields of research.   

Simulation-Based Power Analyses for the Smallest Effect Size of Interest: A Confidence-Interval Approach for Minimum-Effect and Equivalence Testing Paul Riesthuis    

Effect sizes are often used in psychology because they are crucial when determining the required sample size of a study and when interpreting the implications of a result. Recently, researchers have been encouraged to contextualize their effect sizes and determine what the smallest effect size is that yields theoretical or practical implications, also known as the “smallest effect size of interest” (SESOI). Having a SESOI will allow researchers to have more specific hypotheses, such as whether their findings are truly meaningful (i.e., minimum-effect testing) or whether no meaningful effect exists (i.e., equivalence testing). These types of hypotheses should be reflected in power analyses to accurately determine the required sample size. Through a confidence-interval-focused approach and simulations, I show how to conduct power analyses for minimum-effect and equivalence testing. Moreover, I show that conducting a power analysis for the SESOI might result in inconclusive results. This confidence-interval-focused simulation-based power analysis can be easily adopted to different types of research areas and designs. Last, I provide recommendations on how to conduct such simulation-based power analyses.   

Capturing the Social Life of a Person by Integrating Experience-Sampling Methodology and Personal-Social-Network Assessments Marie Stadel, Laura F. Bringmann, Gert Stulp, et al.

The daily social life of a person can be captured with different methodologies. Two methods that are especially promising are personal-social-network (PSN) data collection and experience-sampling methodology (ESM). Whereas PSN data collections ask participants to provide information on their social relationships and broader social environment, ESM studies collect intensive longitudinal data on social interactions in daily life using multiple short surveys per day. In combination, the two methods enable detailed insights into someone’s social life, including information on interactions with specific interaction partners from the personal network. Despite many potential uses of such data integration, there are few studies to date using the two methods in conjunction. This is likely due to their complexity and lack of software that allows capturing the full social life of someone while keeping the burden for participants and researchers sufficiently low. In this article, we report on the development of methodology and software for an ESM/PSN integration within the established ESM tool m-Path. We describe results of a first study using the developed tool that illustrate the feasibility of the proposed method combination and show that participants consider the assessments insightful. We further outline study-design choices and ethical considerations when combining the two methodologies. We hope to encourage applications of the presented methods in research and practice across different fields.   

The Incremental Propensity Score Approach for Diversity Science Wen Wei Loh, Dongning Ren    

Addressing core questions in diversity science requires quantifying causal effects (e.g., what drives social inequities and how to reduce them). Conventional approaches target the average causal effect (ACE), but ACE-based analyses suffer from limitations that undermine their relevance for diversity science. In this article, we introduce a novel alternative from the causal inference literature: the so-called incremental propensity score (IPS). First, we explain why the IPS is well suited for investigating core queries in diversity science. Unlike the ACE, the IPS does not demand conceptualizing unrealistic counterfactual scenarios in which everyone in the population is uniformly exposed versus unexposed to a causal factor. Instead, the IPS focuses on the effect of hypothetically shifting individuals’ chances of being exposed along a continuum. This allows seeing how the effect may be graded, offering a more realistic and policy-relevant quantification of the causal effect than a single ACE estimate. Moreover, the IPS does not require the positivity assumption, a necessary condition for estimating the ACE but which rarely holds in practice. Next, to broaden accessibility, we provide a step-by-step guide on estimating the IPS using R, a free and popular software. Finally, we illustrate the IPS using two real-world examples. The current article contributes to the methodological advancement in diversity science and offers researchers a more realistic, relevant, and meaningful approach.   

Practices in Data-Quality Evaluation: A Large-Scale Review of Online Survey Studies Published in 2022 Jaroslav Gottfried    

In this study, I examine data-quality evaluation methods in online surveys and their frequency of use. Drawing from survey-methodology literature, I identified 11 distinct assessment categories and analyzed their prevalence across 3,298 articles published in 2022 from 200 psychology journals in the Web of Science Master Journal List. These English-language articles employed original data from self-administered online questionnaires. Strikingly, 55% of articles opted not to employ any data-quality evaluation, and 24% employed only one method despite the wide repertoire of methods available. The most common data-quality indicators were attention-control items (22%) and nonresponse rates (13%). Strict and unjustified nonresponse-based data-exclusion criteria were often observed. The results highlight a trend of inadequate quality control in online survey research, leaving results vulnerable to biases from automated response bots or respondents’ carelessness and fatigue. More thorough data-quality assurance is currently needed for online surveys.   

Implementing Statcheck During Peer Review Is Related to a Steep Decline in Statistical-Reporting Inconsistencies Michèle B. Nuijten, Jelte M. Wicherts   

We investigated whether statistical-reporting inconsistencies could be avoided if journals implement the tool statcheck in the peer-review process. In a preregistered pretest–posttest quasi-experiment covering more than 7,000 articles and more than 147,000 extracted statistics, we compared the prevalence of reported p values that were inconsistent with their degrees of freedom and test statistics in two journals that implemented statcheck in their peer-review process ( Psychological Science and Journal of Experimental and Social Psychology ) and two matched control journals ( Journal of Experimental Psychology: General and Journal of Personality and Social Psychology ) before and after statcheck was implemented. Preregistered multilevel logistic regression analyses showed that the decrease in both inconsistencies and decision inconsistencies around p = .05 is considerably steeper in statcheck journals than in control journals, offering preliminary support for the notion that statcheck can be a useful tool for journals to avoid statistical-reporting inconsistencies in published articles. We discuss limitations and implications of these findings.   

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Scientists Propose Upgrades to Research-Methods Education for Psychology Students 

Many undergraduate psychology courses fail to ensure students fully understand research design and analysis. An international team of psychological scientists have recommended some systemic steps to remedy that shortcoming.

Multilab Replication Challenges Long-held Theories on Cognitive Dissonance

One of the foremost models that scientists use to measure the effects of cognitive dissonance may have some deficiencies, a new multilab registered replication indicates.

When Things Don’t Go According to Plan

Methodologists have embraced preregistration as a way to prevent questionable research practices and add transparency to scientific studies. But many researchers end up deviating from those preregistered plans, and those deviations aren’t reported systematically, if at all.

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Computer Science > Computer Vision and Pattern Recognition

Title: subspace prototype guidance for mitigating class imbalance in point cloud semantic segmentation.

Abstract: Point cloud semantic segmentation can significantly enhance the perception of an intelligent agent. Nevertheless, the discriminative capability of the segmentation network is influenced by the quantity of samples available for different categories. To mitigate the cognitive bias induced by class imbalance, this paper introduces a novel method, namely subspace prototype guidance (\textbf{SPG}), to guide the training of segmentation network. Specifically, the point cloud is initially separated into independent point sets by category to provide initial conditions for the generation of feature subspaces. The auxiliary branch which consists of an encoder and a projection head maps these point sets into separate feature subspaces. Subsequently, the feature prototypes which are extracted from the current separate subspaces and then combined with prototypes of historical subspaces guide the feature space of main branch to enhance the discriminability of features of minority categories. The prototypes derived from the feature space of main branch are also employed to guide the training of the auxiliary branch, forming a supervisory loop to maintain consistent convergence of the entire network. The experiments conducted on the large public benchmarks (i.e. S3DIS, ScanNet v2, ScanNet200, Toronto-3D) and collected real-world data illustrate that the proposed method significantly improves the segmentation performance and surpasses the state-of-the-art method. The code is available at \url{ this https URL }.

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