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

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

When you cut a flower to put into a vase, it'll eventually wilt, even with water and sunshine. But is there another scientific secret to keeping flowers fresh?

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

How do organic materials become soil? This science experiment measures what materials biodegrade.

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

This science fair project teaches students the differences between fruits and vegetables.

This science fair project idea demonstrates that plants give off water.

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

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

This science fair project teaches students about wilting and browning of salad greens.

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

This science fair project idea investigates how the shape of an object affects drag.

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

This science fair project will help students learn about non-vascular plants, such as mosses.

This science experiment has students test whether a snail moves faster on concrete or dirt.

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

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

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

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

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

This science fair project idea determines which method of hand cleansing is the most effective.

Do different types of oil mix or stack? Find out in this science fair project idea!

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

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

This science fair project idea investigates which objects float and sink in honey, water, and oil.

This science fair project idea investigates if webbed feet help a duck (and others) swim.