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How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

Try the classic balloon-on-the-wall trick with your kid and watch static electricity in action.

This experiment investigates whether the psychological phenomenon of the halo effect can be used to explain people's perceptions of others.

Slime: It's oozy, it's goopy, and it's just plain fun! Learn how to make slime with this fun science fair project.

Kids learn about the color rendering index by finding the best lightning for makeup in this fun and original physics science fair project idea.

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

This biodiversity project examines the biodiversity in your own backyard.

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

Check out this cool science fair project on identifying rocks and minerals for kids.

What if the shape of the Earth weren't spherical? How does its shape affect our gravity, climate, and tides? Model these questions in this cool project!

The actual factors affecting friction may surprise you! Learn about the coefficient of friction and put some trigonometry into practice in this science project.

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

Create a homemade pair of sunglasses with colored lenses to see just how light and color affect our sight! Use this fun project to practice science!

Is there any correlation between hot tubs and high blood pressure? Kids discover the answer (and its biological basis) in this cool science fair project.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

Kids learn about Brownian motion, diffusion, and how temperature is a key factor affecting the rate of diffusion in this cool science project.

With this hands-on activity, you'll show how fall colors are hidden in the leaf all year long!

Determine how salinity affects the circulation of warm and cold water. Note whether the warm water mixes or forms a layer with cold water.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

The objective of this experiment is to evaluate whether funny advertisements are more or less effective than serious advertisements.

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

Demonstrate Newton's laws of motion by examining the relationship between mass, force, and acceleration during free-fall.

Make stunning pendulum waves and learn the math behind the patterns generated with this cool and easy science project.

In this enlightening transpiration experiment, kids will explore how the loss of water from plants through transpiration contributes to the water cycle.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

This science fair project idea examines reptile behavior and to determine whether reptiles are more active during warmer temperatures.

Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.

Learn how to make a periscope with this cool engineering science fair project idea, and learn about optics to learn how a periscope works.