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

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

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

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

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

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

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.

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

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

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

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.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

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

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.

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

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

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

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

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.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

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

In this experiment, kids will see if pruning tomato plants makes them more fruitful and learn about the factors that contribute to a plant's fruit production.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

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