This science fair project idea investigates if heat from direct sunlight is hotter than heat from reflected sunlight.

Test your friends to find out if you can replicate the placebo effect's incredible results.

This science fair project idea explores how length affects the weight a bridge can hold.

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

Examine the effect of pressure on carbonation in soda.

Check out this cool science fair project idea to explore which other common animals besides scorpions glow under a UV Black light.

Using a toy race car kids create a visual model of the Doppler Effect.

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.

This science fair project idea discovers whether there are some objects that do not fall at a constant rate.

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.

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

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

Science fair project which compares the rate of temperature change and the maximum temperature as a result of the angle of light radiation.

This science fair project idea determines the most effective method of preserving food.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

Learn about magnifying glasses, concave lenses and inverted images by sending rays of light through a magnifying glass in this cool science fair project!

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

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

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

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

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.

This science fair idea examines hydrogel superabsorbent polymer crystals. They can absorb 500 times their weight in water. Can they absorb other liquids too?

In this experiment, young ecologists will learn about a type of edge effect: how trees and plants at the edge of a forest can act as a weed filter.