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High School Science Fair Projects

Need a science fair project that's fun, engaging, and appropriately rigorous for a high school science fair? Education.com has assembled a rich collection of high school science fair projects and high school science fair project ideas written by our team of professional scientists, science teachers, and educational consultants. We offer free high school science experiments on every science fair topic, including physics, chemistry, biology, engineering, and even psychology. Check the boxes in the sidebar to filter your results, or use the search bar to find a winning idea for your upcoming science fair. Hundreds of good science fair projects are only a click away.

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High School

All That Glitters

This science fair project outlines the uses of gold and explores the monetary value of gold.

This science fair project discovers the causes, effects and practical applications of buoyancy and encourages technological advances.

Another Tragedy Waiting To Happen

This science fair project idea attempts to prevent another tragedy in Gonaives and encourages technological advances against flooding.

This science fair project idea discovers the mechanism of laminar flow and encourages technological progress based on this concept.

Water Water Everywhere

The aim of this science fair project is to examine the differences between brands of bottled water and analyze consumer preferences through a taste test.

How to Make a Lie Detector

This science fair project idea investigates whether body language and heart rate can decipher who's lying and who's not.

Now You See It, Now You Don't: How Age and Sex Affect Our Ability to Perceive Optical Illusions

This science fair project idea determines if females or males tend to do better on optical illusion tests and whether certain age groups also do better.

This Little Light of Mine

This science fair project idea sheds some "light" on which color of candles burn the longest.

Lighten Up! How Light Affects Photograph Quality

This science fair project investigates which type of light bulbs are the best at producing flattering photographs in both flash and non-flash conditions.

Too Hot To Handle

This science fair project idea discovers the average number on the Scoville scale that humans can endure in hot peppers before physical signs kick in.

How Right Is Rain?

This science fair project idea determines the properties of rainwater and examines the techniques for harvesting rainwater.

Made In The Shade

This science fair project idea deals with the qualities of shade on a sunny day.

Powered Parachutes

This science fair project idea looks into the concept of powered parachutes as the future of transportation.

This science fair project idea attempts to develop a new or improved eco-friendly packing material.

Marie Laure Ryan Experiment

This science fair project idea studies how how do readers predict what events will happen next while reading a story.

How Does time Perception Change As You Get Older?

This science fair project idea studies how time perception changes with age.

How Can You Stop Electromagnetic Radiation From Penetrating a certain area?

This science fair project idea teaches Gauss' law and its implications and calculates and comprehends the flow of electrical charges in a Faraday Cage.

Radio Waves, It's In The Air: Build A Basic Radio

The purpose of this science fair project is to build a basic radio.

The Answer is Blowing in the Wind

Wind is an important source of renewable, green energy. The purpose of this science fair project is to build and operate a windmill generator.

Generate gas from garbage. The purpose of this science fair project is to simulate how landfills generate gases that can be used to create energy.

Will Irradiation Produce Mutations in Fruit Flies?

This project examines the vulnerability of fruit flies, Drosophila melanigaster, to irradiation. Will exposure result in mutations?

Reusable Candle

In this science fair experiment about recycling, demonstrate how the wax from a candle can be reused to make another candle.

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

Perpetual Motion Machine

The goal of this science fair project is to attempt to build a perpetual motion machine and analyze the Laws of Thermodynamics.

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