This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

In this investigation, three different juices are tested to determine which juice contains the greatest amount of vitamin C.

What can you do with hair after its cut? This science project teaches you practical uses for human hair.

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.

Discover whether the â5-second ruleâ is effective at determining whether food is still safe to eat after being dropped on the ground.

You've heard all about oil spills, but can they really be that bad? After all, vegetable oil is in almost every yummy baking good from cookies to brownies.

Explore the craters, maria, and highlands on the surface of the Moon! In this fun science project you'll create a 3-D model of the moon using paper mache.

This science fair project idea investigates whether plants can survive being frozen.

This science project teaches students about organic farming and the benefits and disadvantages of commercial plant food.

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

This science fair project idea explores whether people have an innate feel for the passing of time from a few seconds to 20 minutes.

This science fair project idea explores the different properties & interactions of sugar molecules.

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

In this project, vinegar and salt act as preservatives keeping bacteria from growing in the bouillon mixtures.

In this fun science fair project idea, kids will experiment with various methods in order to discover the fastest way to cool a soda.

In this project, a mnemonic is used to test how it increases memory.

In this project, a magnet is used to collect iron from breakfast cereals.

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

Is cleaning with lemon effective? Get ready to give this science project some elbow grease and find out if acidic lemons can be used as a cleaning agent.

Science fair project in which you will attempt to throw a ball the greatest horizontal distance possible by using different angles.

Compare animal and plant fats and observe, and record, and draw conclusions about their similarities and differences.

How clean is the air we breathe? The answer might surprise you. Learn how to investigate local air quality with this cool science fair project.

Science fair project which uses coins flips to visually demonstrate the probability of an event and how to express it.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

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

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

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.

Explore how dielectric heating comes into play when microwaving various liquids in this science project. This test will help you understand how microwaves work!

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