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Earth and Space Science Fair Projects

Looking for science fair project ideas that will make your kid a star at his upcoming science fair? Education.com'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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Save money by making compost! Use this science fair project idea to determine which composting methods best encourage decomposition of organic matter.
Ecology
Sixth Grade
Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.
Weather and Climate
Second Grade
Students explore hot desert plant adaptations in this cool science fair project by observing how these organisms prevent excessive transpiration.
Ecology
Fifth Grade
In this science fair project, you'll make a 'ghost' appear in a test tube, and learn about what happens when hot water and cold water interact.
Weather and Climate
Elementary School
In this science fair project, students use hot and cold water to simulate what happens when a warm front meets a cold one.
Earth & Space Science
Weather and Climate
Science fair project that examines whether different types of algae produce the same amount of oil by comparing the surface beading of water droplets.
Earth & Space Science
Sixth Grade
Science fair project that determines whether increased levels of ultraviolet radiation are harmful to the growth of lettuce plants.
Earth & Space Science
Sixth Grade
Science fair project that determines whether windmills can be designed so that birds will not feed on them. Will they discriminate between different patterns?
Earth & Space Science
Sixth Grade
A great science fair project on solar oven design that helps kids learn about solar power and solar heating.
Ecology
Seventh Grade
This science project challenges students to take learned information about weather and  climate control and apply it to larger issues like global warming.
Weather and Climate
High School
Science fair project that helps you create your own compost pile in order to test the efficiency of different methods of composting.
Ecology
Environmental Issues
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.
Astronomy
Eleventh Grade
Science fair project that compares the freezing temperature of salt water and freshwater in order to learn about supercooling and condensation nuclei.
Earth & Space Science
Fifth Grade
How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.
Weather and Climate
Third Grade
This science fair project idea researches the effects of acid rain on plant growth.
Ecology
Elementary School

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