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.

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

This experiment challenges students to forecast the weather based on the surrounding areas' weather.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

Test whether plants can grow without sunlight and water.

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

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

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

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

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

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

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

Before you get ready for a delicious scramble or omelet, add a bit of science to your morning routine!

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

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

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

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

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

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

In this fun science experiment, kids will determine the best method for ripening avocados and discover the cool chemical reaction that makes this possible.

Is it a square or a circle? See if you can trick your friends with this zany science project!

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

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.