What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

Learn how to make a food pyramid with animals in a a coniferous forest ecosystem around your home.

In this project students experiment with making music using only glasses of water.

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

In this simple circular motion experiment, you'll observe tangential velocity and learn about how acceleration and centripetal force affect an object.

Using a toy race car kids create a visual model of the Doppler Effect.

In this science fair project, young children discover what happens when two fluids that have different densities get together.

Find out whether a longer airplane will fly farther or a wider paper airplane.

In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.

This project compares the strength of one, two, and three-ply toilet paper.

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

This classic children's game demonstrates how sound travels through air vs. through a solid.

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.

Here's a great activity that uses corks and toothpicks to create a fleet of floating boats. Which design makes for the most seaworthy vessel?

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

This science fair project idea examines the reason boats are shaped and engineered.

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!