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.

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

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

This science fair project idea compares biodiversity between drops of water.

This science fair project idea investigates the difference in reaction times between boys and girls.

How powerful is the reaction between baking soda and vinegar? Find out here!

Teach your first grade scientist the difference between liquids and solids using maple syrup.

The objective of this science fair project is to explore the relationship between acidic and basic compounds.

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

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

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

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

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

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

The purpose of this study is to determine if people can tell the difference between organic and conventional food from looking at, smelling and tasting it.

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

The objective of this science project was to build a model of a volcano and observe reaction between different substances, including baking soda and vinegar.

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

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

Uh-oh! Is that a pill sitting on the counter or a piece of candy?

In this science project, the center of gravity is explored.

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

This science fair project teaches students about wilting and browning of salad greens.

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

In this science fair project, kids will be able to see where germs reside on their hands while gaining insight into the benefits of thorough hand washing.

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.

Start your toy engines -- this is going to be a fast and friction-filled race!

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

This science fair project explores how osmotic pressure forces water through the root up into the plant.