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This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.

How powerful is the reaction between baking soda and vinegar? Find out here!

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

This science fair project idea experiments with spinning color wheels and optical illusions.

Climates with more snowfall have more coniferous forests and fewer deciduous ? Learn about how pine trees in a coniferous forest adapted to withstand snow.

Learn about this simple machine and make a pulley of your own to use for fun science trials.

Future engineers, unite! Discover how to keep a sandcastleâs bridge from falling into the moat.

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

Explore how dielectric heating comes into play when microwaving various liquids in this science project. This test will help you understand how microwaves work!

Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

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

This science fair project investigates why the number of visible stars changes from place to place.

Determine if gender affects the ability to identify different smells.

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

Is it magic? No...it's the amazing, gravity-defying capillary action experiment! Kids will love this dramatic and enlightening science fair project.

This science fair project idea explores the different properties of matter.

This science fair project idea produces varying pitches of sound.

Check out this fun science fair project to make a vinegar and baking soda balloon and demonstrate how gas is created as a result of the chemical reaction.

Learn how starch and carbohydrates interact with different solvents in this fun and easy packing peanut science fair project.

Take a dive into the candy jar with this yummy science experiment.

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.

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

Discover whether cold or hot water from the faucet will boil faster on the stove.