The objective of this experiment is to identify common materials that absorb sound waves with the greatest efficiency.

In this science fair project, young children observe, record, and create collections of shapes in their world and increase their powers of observation.

Free science fair project idea examining how different types of water affect plant germination and growth.

This science fair project teaches students about wilting and browning of salad greens.

This science fair project idea explores whether the color of surroundings affects human mood.

How is NASA able to launch something into orbit around the Earth? Learn about the relationship between gravity, speed, and orbit in space in this cool project!

Science fair project in which you will create your electricity by making a homemade battery using salt water, a nail, and a copper wire.

Dig into the physics of pool to explore some cool applied math and learn about what happens in an elastic collision of equal masses.

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

Science fair project the demonstrates Newton's Third Law using a milk carton filled with water.

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

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

Demonstrate that insects observe colors and choose favorites. Place colored pieces of construction paper on a flat, glassy surface, observe bug preference.

Discover flight initiation distance as you play around in the park with this fun bird watching project!

Discover the interactions of synthetic dyes and natural dyes on natural and artificially-made fabrics.

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

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

Determine the relationship between the speed of a sound and the temperature of the air it passes through.

This science fair project idea determines which method of hand cleansing is the most effective.

Use a fish tank to simulate a pond! This science fair project explores the relationship between acid rain and the dissolved oxygen concentration of water.

Wild-type and GAPDH mutant Caenorhabditis elegans were used as an example of how glucose or sugar affects the lifespan of humans.

The objective of this science fair project is to examine the cleanliness of salad preparation techniques.

The objective of this science fair project it to determine whether adding ethanol alcohol to gasoline slows the run time of a motor.

In this Bernoulli's Principle experiment, you'll learn how an increase in the speed of a fluid, like air, decreases pressure.

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

Here's an easy experiment that lets your first grader practice the scientific method, while watching a caterpillar eat.

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

This experiment investigates whether the Ranschburg Effect is observed more frequently in older or younger adults.

This experiment demonstrates the conservation and transfer of energy using a marble rolling over sandpaper.

This experiment will examine and precisely measure the amount of sugar in various sodas.