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

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

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

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.

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

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.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

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.

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

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

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!

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

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

Get down to the rubber with this science project that tests the effectiveness of different types of erasers.

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.

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

In this enlightening transpiration experiment, kids will explore how the loss of water from plants through transpiration contributes to the water cycle.

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

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

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

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.

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!

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