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

Score a bull's eye with this cool science fair project on horizontal projectile motion. Guide a marble to its target and predict its trajectory using math!

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

Find out whether cast iron or regular teflon pans heat up faster and also retain their heat longer.

What is the Doppler Effect, or the Doppler Shift? The purpose of this science fair project is to determine how distance impacts the Doppler Effect.

Science fair project about work and energy which uses a simple mathematical formula to predict how far a jar will roll down an incline.

In this fun science fair project idea learn the difference between additive and subtractive color and why they are handled differently.

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

Find out which kind of bubble wrap fares best when put in impact.

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.

Build a magnetic linear accelerator using a ruler, neodymium magnets, and small metal balls in this fun science fair project exploring magnetic propulsion.

Here's an easy experiment that lets your first grader practice the scientific method, while watching a caterpillar eat.

Find out which type of sponge holds the most water.

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

The objective of this project is to evaluate whether a top will spin at different rates during different phases of the moon.

Get a cool and easy science fair project idea which helps high school students in understanding concepts behind the working of a microphone.

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.

Demonstrate how static electricity can cause an object to move. It also examines just how an object affected by static electricity will move.

Air resistance is a crucial factor when designing a parachute. In this science fair project, students find what type of material works best as a parachute.

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

The goal of this science fair project is to attempt to build a perpetual motion machine and analyze the Laws of Thermodynamics.

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?

Science fair project that examines the effects of soap on the surface tension of water. How does soap affect the surface tension of water?

This experiment examines if space objects become round after reaching a certain mass.

Science fair project that explore how compound motion works by examining how gravity is affected by horizontal force.

Science fair project that demonstrates the process known as refraction, which allows glasses and contact lenses to help people with poor vision.

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

Science fair project that demonstrates how a rainbow forms, by using water to split white light into its many colors.

Science fair project which identifies the most effective insulator that you could use to make a winter coat by comparing how well cloth and cotton trap heat.

In this science fair project, students test how objects float and sink in liquids of different densities.