This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

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

The objective of this science fair project is to study the photosynthesis process and demonstrate the important role that leaves play in the process.

Is horse manure a possible energy source in a crisis? Use calorimetry to find out how much energy horse manure can produce in this science fair project.

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

The purpose of this science fair project is to build a basic radio.

This is a fantastic and easy science experiment where kids will learn about elasticity by testing how high bouncy balls of different materials can bounce.

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

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

Science fair project which determines whether a person's taste in music is dictated by the key that the song is written in.

Soil is made up of different layers. How far down do you need to dig to find the soil horizon, or the place where bits of leaves and branches become soil?

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

Future engineers, unite! Discover how to keep a sandcastleâs bridge from falling into the moat.

Science fair project which measures whether tsunamis are more destructive when they are caused by an earthquake or by a meteor.

This project uses science and art to help students learn and teach others about Earth's endangered and extinct species.