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.

This science fair project idea investigates how color affects temperature.

This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

This science fair project idea investigates how magnetism can defy the force of gravity.

Get ready for a yummy taste test! Just pour the milk -- and make sure you have some chocolate chip cookies on hand.

Kids discover what a homogeneous mixture is by adding sugar to distilled water and identify the various factors affecting solubility.

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

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

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

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

Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.

Kids will explore the corrosiveness of soda in this cool science fair project by leaving pennies submerged in soda overnight.

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 science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.

In this science fair project, students use the streak test to tell minerals apart from each other.

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

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

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

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

This science fair project idea examines which type of insulation holds in the most heat.

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

Learn how starch and carbohydrates interact with different solvents in this fun and easy packing peanut science fair project.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.