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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?

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.

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.

Use a dichotomous key to identify plants or animals.

In this science fair project, students examine how temperature affects sugar transport within a plant.

This experiment will explore the best way to create a perfect soft-boiled egg.

Use applied math to model orbital eccentricity in this cool science fair project for 7th grade.

Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.

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.

Demonstrate how we are able to locate sounds, echolocation. Have a blindfolded subject locate you by the sound of your clapping.

In this science fair experiment, students learn about the scientific principles behind Doppler ultrasound.

This science fair project idea investigates how different disinfectants work in killing germs.

This project explores how and how much one family can reduce the amount of garbage they accumulate over a three month period.

Examine the effect of pressure on carbonation in soda.

Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.

Science fair project which teaches you how to make your own homemade glue by combing curdled milk with baking soda.

Learn about the Atwood Machine and Newton's 2nd Law with a pulley and masses of different weights in this physics science project.

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

Science fair project about work and energy which uses a simple mathematical formula to predict how far a jar will roll down an incline.

Science fair project that explains and demonstrates the parallax principle.

Demonstrate how static electricity can cause an object to move. It also examines just how an object affected by static electricity will move.

This science fair project idea determines if the color of light affects the growth of plants.

This science fair project idea experiments with spinning color wheels and optical illusions.

Science fair project which determines whether your current calorie intake will cause you to lose or gain weight over time.

Discover the force of water! This article provides step-by-step instructions for creating your own science experiment.

This free science fair project explores the "dirty" relationship between the presence of organic material in soil and water absorbency.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.

This science fair project determines the quality of a given product.