This fun elementary school science fair project idea helps students in designing an amusement park using their knowledge of forces and simple machines.

This science fair project determines whether the types of plants growing in a Pacific Northwest rain forest environment are influenced by the soil acidity.

Find out whether matte or shiny nail polish lasts longer.

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?

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

This social science experiment assesses whether the timing of peak mental performance shifts from afternoon to morning as we age.

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

This research project teaches students about synesthesia, a neurological condition that causes sensory overlap.

This project explores if people more easily distinguish between faces of people of their own race or ethnicity compared to those of other races or ethnicities.

Wind is an important source of renewable, green energy. The purpose of this science fair project is to build and operate a windmill generator.

Place mushroom caps on poster board, label samples. Check beneath mushroom caps for "prints" of spores. Record and interpret prints left behind.

Science fair project which measures the amount of heat energy released by a burning candle by calculating how many calories of heat it emits.

Do human lie detectors exist? Charge up your powers of observation to see if you can tell a lie from the truth.

Check out this free high school science fair project to explore the physics of the Coriolis effect with a homemade Foucault Pendulum.

This science fair project idea raises awareness of a real ecological issue.

This science fair project idea examines various dead zones and investigates the cause and how it can be fixed.

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

Create your own light bulb and test filaments of different thicknesses to see which keeps the bulb burning for the longest time.

This science fair project idea explores if male or female humans are more likely to exhibit some form of color blindness.

This science fair project idea examines whether boys and girls differ in reflexes.

The objective of this experiment is to evaluate the effects of acid rain on plants.

This science fair project idea quantifies exactly how accurate the cricket thermometer is.

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

Can a horse lead itself to the carrot? Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.

In this science fair experiment, high school students fit the growth pattern of bacteria to a mathematical model and predict future colony expansion.

Check out this cool science fair project idea to explore the relationship between pulse rate and blood pressure in healthy people.

Research active ingredients in anti-aging creams. Test skin creams on volunteers, document the effectiveness of the creams with before an after photographs.

The objective of this science project is to investigate why NASA has been using aerogel for the Stardust Project for collecting gas and dust from comets.

Test whether spot magnets can help improve the symptoms of an injury.

Determines the extent that high school GPA predicts future income. Survey volunteers, divide GPA into 5 categories, compare income levels with GPA