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

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

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

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.

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

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

Do different types of oil mix or stack? Find out in this science fair project idea!

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

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

Enter the buzz worthy world of bee watching and find out what time bees like to wake up!

How does salinity affect the point at which water freezes? Kids will find out by performing this cool melting ice experiment.

When you see those sunscreen "protection levels," what does that really mean? Try this experiment to find out.

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

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

In this project, learn about animal vision and different kinds of eyes: ocelli, compound eyes, and camera eyes. Find out what a jellyfish or grasshopper sees!

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.

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.

This activity is a great way to teach kids that, to find examples of science in action, they donât need to look any further than their own backyard.

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.

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

Do hand soaps and sanitizers prevent the growth of bread mold? If so, why? Kids will find out with this fun and informative science fair project idea.

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!

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

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