Young physicists will wrestle with a discrepant event: the Hammer Ruler Trick. They'll make some inferences about torque, balance, and center of gravity.

In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

This science fair project idea provides evidence that air is everywhere and takes up space.

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 examines whether boys and girls differ in reflexes.

This science fair project idea investigates the difference in reaction times between boys and girls.

This science fair project idea produces sounds by creating vibrations using different objects.

This science fair project idea produces varying pitches of sound.

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

Does the temperature of a magnet affect its strength? Learn about the relationship between magnets and temperature with this cool physics science fair project.

You've heard the expression "burn rubber" but do you know how heat affects rubber? Examine the impact of temperature on rubber in this fun science experiment.

Find out whether packaged seeds actually do expire in this new science fair project idea.

This science fair project idea researches the different layers of the atmosphere and creates a visual representation of the atmospheric layers.

Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

Discover which fabrics shrink the most in the wash and why.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

Kids make a paperclip perform an act of magnetic levitation and test how effective various materials are at magnetic shielding in this science fair project.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

Kids will create their own version of Richard Feynman's rubber band heat engine to learn about thermodynamics with this cool science fair project idea.

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?

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

In this science fair project, students make their own rain gauge to measure rainfall.

The goal of this project is to create an exciting topographical map out of dough.

Find out whether putting something on top of a plant will inhibit its growth.

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

What are the effects of colored light on plant growth? Explore plant behavior in this cool botany science fair project and learn about phototropism!