In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

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.

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

This science fair project idea examines the reason boats are shaped and engineered.

Explore if planting seeds in a certain direction will affect how fast it germinates.

Construct and experiment with a periscope using reflected light rays to gather an image.

In this project students experiment with making music using only glasses of water.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

Discover whether a metal will expand under hot water.

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

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

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

Do different types of oil mix or stack? Find out in this science fair project idea!

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

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.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

This fun and easy middle school science fair project idea explores the topic of pollution and demonstrates if polluted soil affect the growth of green plants.

Find out which kind of bubble wrap fares best when put in impact.

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

Learn about the role of Earth's rotation on the Coriolis Effect and hurricanes in this science project. Model the Coriolis Effect on a hurricane's direction.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

Before you get ready for a delicious scramble or omelet, add a bit of science to your morning routine!

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.

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

This science project teaches students to classify different shapes of leaves.

This science fair project idea investigates the hardness property of minerals.