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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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The apparent movement of the sun has been used to keep time since the bronze age. In this science fair project, kids plot solar time against mean solar time.
Eleventh Grade
Astronomy
Check out this fun science fair project idea to measure bacterial colonies from door handles and explore the effectiveness of different cleaning agents.
High School
Middle School
Science fair project that examines the physical characteristics of soil in order to learn about soil permeability and other environmental properties.
Fifth Grade
Sixth Grade
This science fair project idea explores which is better for diffusion and cell absorbing, more surface area, or more volume.
High School
Medium
This science project challenges high school students to study the linguistic evolution of text messaging.
High School
Behavioral/Health Science
This science fair project idea explores alcoholic fermentation at work by making your own soda.
High School
Middle School
Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.
Fifth Grade
Sixth Grade
This science fair project idea  determines whether plants grow better in soil or in fish ponds.
High School
Middle School
Science fair project that demonstrates the principle of conservation of mass by conducting a chemical reaction inside a sealed Ziploc bag.
Ninth Grade
Tenth Grade
Science fair project that teaches you key definitions of molecular science, and how different isotopes of an element affect the relative atomic mass.
Eighth Grade
Ninth Grade
Science fair project that examines learn how the angle of incidence affects the efficiency of solar panels. How does a solar cell work?
Sixth Grade
Seventh Grade
This science fair project idea explores  if an LED light can be powered by vegetables and/or fruits.
High School
Middle School
This fascinating science fair project explores eye color genotypes.
High School
Medium
This science fair project challenges students to research vortices occurring in nature and then create their own vortex.
High School
Hard

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