Earth and Space Science Fair Projects

Looking for science fair project ideas that will make your kid a star at his upcoming science fair?'s editorial staff has curated a rich collection of cool Earth and space science fair projects written by our team of talented professional scientists, science teachers, and educational consultants. Our Earth science projects and Earth science experiments give inquisitive kids the opportunity to identify unknown minerals and discover why certain volcanic rocks can float. Our space science projects give students the chance to do everything from building a model rocket to determining the elliptical path of a planet's orbit using applied math.

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Water, along with soil and light, is a necessary component for plant growth. So what's better for promoting plant growth: tap water, or rain water?
Earth & Space Science
This science fair project idea will be examining oxidation and acid rain
Middle School
Explore how wind is produced and get a demonstration on the cooling effect of wind in this breezy science fair project idea.
Weather and Climate
Elementary School
The purpose of this science project is to learn how to measure sky distances with your hands. Use to find more fun science fair project ideas!
Elementary School
This science fair project idea determines the properties of rainwater and  examines the techniques for harvesting rainwater.
High School
Observe how acidity affects saltwater. Fill fish tanks with saltwater. Put the CO2 injectors inside and monitor condition of fish
Environmental Issues
This science fair project outlines the uses of gold and explores the monetary value of gold.
High School
Test marble and limestone to determine if acid rain is harmful enough to damage buildings and stone monuments.
Earth & Space Science
Fourth Grade
The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.
Earth & Space Science
First Grade
The goal of the project is to evaluate whether land or water warms more quickly when subjected to increased temperature.
Elementary School

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