In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

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

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

This science fair project idea investigates how color affects temperature.

This project tests the hypothesis that dark colors absorb more heat than light colors.

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

The project determines which type of birds prefer which type of birdseed.

This science fair project idea explores substances that cause a bubble to last longer.

This science fair project idea investigates if fats add to the flavor of food.

Explore if planting seeds in a certain direction will affect how fast it germinates.

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

The project determines the forces that cause paper airplanes to fly and determine which type of paper airplane flies the farthest.

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

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

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

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.

The project investigates how friction affects motion by using different surface textures.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

This science fair project idea explores how length affects the weight a bridge can hold.

Demonstrate the properties of pressure and surface tension to explain how water can stay inside an upside down glass using cardboard.

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.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

Marshmallows are made of sugar, water, and air pockets. Since the marshmallow is flexible, will air pressure cause it to expand when heated in a microwave?

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

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.

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