In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

In this project students experiment with making music using only glasses of water.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

In this project children practice the scientific method while playing with puffy paint.

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

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

Gather some friends for a bubbly soda taste test do determine calories' role in your favorite drinks.

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

Find out whether a longer airplane will fly farther or a wider paper airplane.

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

Kids will learn some cool stuff about chemical reactions by determining what happens when you mix different concentrations of hydrogen peroxide and yeast.

This project determines what category of person is most likely to be ticklish.

Plants and light seem to be good buddies, but how far does the friendship really go?

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

The objective of this science fair project is to explore the relationship between acidic and basic compounds.

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

This project examines whether people's taste perception is influenced by what they see.

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

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

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?

This science fair project idea explores whether white light can be separated into different colors.

This project investigates the affect of storage temperature on microwave popcorn.

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.

Do you think heat can affect a plant's growth rate?