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

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

Use pepper and soap to discover some fun facts about the properties of water.

Science fair project that examines condensation and the conditions needed in order for dew to form.

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

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

When you cut a flower to put into a vase, it'll eventually wilt, even with water and sunshine. But is there another scientific secret to keeping flowers fresh?

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

This science fair project examines how seeds hitchhike on animals and clothing.

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

This science fair project teaches students the differences between fruits and vegetables.

This science fair project idea demonstrates that plants give off water.

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

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.

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

In this project children practice the scientific method while playing with puffy paint.

In this project combining nature, art, math, and science, children make rubbings of leaves then observe shapes and structures and sort the leaf images.

This science fair project will help students learn about non-vascular plants, such as mosses.

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

How do organic materials become soil? This science experiment measures what materials biodegrade.

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

Which music genres have the fastest tempos? The slowest? This experiment determines if there's a relationship between beats per minute in a song and its genre.

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

This project determines what category of person is most likely to be ticklish.

Do earthworms like moisture or darkness? Find out as we explore the relationship between earthworms and light.

This science fair project idea determines which method of hand cleansing is the most effective.