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.

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.

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

This experiment examines whether storing your orange juice at different temperatures affects its acidity.

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 determines the probability of a coin landing heads or tails.

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

Science fair project which evaluates different athletic shoes in order to find out whether any of them affect a person's ability to run.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

In this science fair project, students will try to discover if test subjects can detect the presence of Monosodium Glutumate (MSG) in food.

Science fair project in which you will attempt to throw a ball the greatest horizontal distance possible by using different angles.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

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

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

This science fair project idea examines whether boys and girls differ in reflexes.

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.

The goal of this project is to create an exciting topographical map out of dough.

This science fair project idea explores whether there is a connection to the color a person wears and the way their emotional state is perceived by others.

Make a backbone model to explore human anatomy and life science.

Demonstrate how to tell the age of an egg without having to crack it open.

This science fair project idea explores the different properties & interactions of sugar molecules.

Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.

This science fair project idea determines if the color of light affects the growth of plants.

Kids will love making sugar crystals in this sugar crystal science fair project which teaches important chemistry concepts like saturation and solubility.

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.