Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.

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.

What do worms eat? Kids find out what kinds of rotting leaves and vegetables worms prefer in this cool compost science fair project.

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.

In this experiment, students will create their own version of coquina, a sedimentary rock thatâs formed by seashells and sand, cemented by seawater minerals.

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!

The goal of this fun science fair project idea is to microwave candy and investigate: do some colors of M&Ms melt faster than others?

Are your taste buds up for the challenge? Put tongues to the test with this science fair project that examines who enjoys sour flavors more, adults or kids?

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.

In this project children discover, identify, and sort seeds from a variety of fruits and vegetables

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.