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Kids love the dramatic Mentos and Diet Coke experiment conducted in this awesome science fair project.

This project is about after-images and what possibly affects them.

Kids make an electromagnet in this electromagnetic induction experiment to learn about induction, current, and the right-hand rule.

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

Learn about how we localize objects and beings in space through sound and about monaural auditory mechanisms and binaural auditory mechanisms.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

Demonstrate the capillary function in plants by adding food coloring to glasses of water. Slice stalks of celery and leafy tops. Compare color of leaves

What is the hydrologic cycle and how does it work? Check out this fun and easy science project where you will model and learn about Earth's water cycle!

How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

Is the birthday paradox really a paradox, or just an intriguing problem that defies intuition? Find out with this birthday paradox science fair project.

In this free science fair project idea, kids will conduct an easy electrolysis of water experiment to test solutions of salt, baking soda, tap water, and more.

This science fair project idea focuses on two classes of sugars monosaccharides (fructose) and disaccharides (sucrose or table sugar).

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

In this wind tunnel experiment, you'll make a wind tunnel to test lift and airflow on a model plane and explore aerodynamics and the Bernoulli Principle.

What kind of fabric holds dye best? How can you improve a dyed fabric's colorfastness? In this colorful project, test colorfastness using mordants and bleach.

How can Hooke's law explain how springs work? Learn about how Hooke's law is at work when you exert force on a spring in this cool science project.

What if the shape of the Earth weren't spherical? How does its shape affect our gravity, climate, and tides? Model these questions in this cool project!

What is vegetative reproduction? Find out how you can clone plants and regrow cabbage from a stem in this cool experiment!

This science fair experiment examines the relationship between gender, age, and smiling.

This science project researches the correlation between barometric pressure and wind velocity.