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Children have a naturally inquisitive mind. Foster their curiosity with a walk through an autumn field or park to answer age-old “why” questions. As you walk with your child, you can encourage them to ask questions.

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.

What is the Doppler Effect, or the Doppler Shift? The purpose of this science fair project is to determine how distance impacts the Doppler Effect.

Check out this free high school science fair project to explore the physics of the Coriolis effect with a homemade Foucault Pendulum.

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

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

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

Study how liquids separate into layers by creating a liquid gradient, different density liquids separate into layers in a graduated cylinder.

Learn about the greenhouse effect- and get great science fair experiment ideas. Read more.

In this science fair project, young children notice and track changes in trees throughout the year.

This experiment explores the question of whether age and/or gender play a role in people's ability to remember dreams.

This project determines how much the rebound rates of tennis balls change after ten games.

The objective of this experiment is to evaluate which types of people are most impacted by the McCollough effect.

Determine the growth rates of different types of human hair. Ask volunteers to not cut their hair until the end of experiment. Measure hair length.

This experiment will explore if and where fractals can be found in the natural world.

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

Find out whether a longer airplane will fly farther or a wider paper airplane.

Science fair project which examines the chemical reaction of a candle flame with various gases in order to determine the identity of the gas.

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

In this science fair project idea, kids make water dance on the surface of a hot pan with the Leidenfrost Effect.

This project analyzes people's emotional responses to images in painting vs similar images in photographs.

What's the difference between centripetal and centrifugal force? Students find out by seeing both in action as they conduct this experiment.

Kids will make a homemade electroscope and explain how it detects static charges through induction in this fun science fair project idea.

Do people only "hear" what they want to hear? Explore pareidolia and psychoacoustics with this easy science fair project that pits melody against white noise.

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

Measure the effectiveness of detergent containing a UV-absorbing compound in blocking UV-A radiation. Use black light and UV detecting beads.

Science fair project that examines how light wavelengths affect photosynthesis in the aquatic plant: Elodea.

Science fair project in which you will build your own algae photobioreactor which will meet the physiological requirements of algae for maximum growth.