How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

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.

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.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

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.

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

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

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

Discover flight initiation distance as you play around in the park with this fun bird watching project!

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

Plants and light seem to be good buddies, but how far does the friendship really go?

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

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

In this project students experiment with making music using only glasses of water.

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

Is it a square or a circle? See if you can trick your friends with this zany science project!

This science fair project idea determines what household items are good conductors of electricity.

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

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

This science fair project idea determines what household items are good conductors of electricity.

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

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.