Fourth Grade Science Fair Project Ideas

Great selection of fourth grade science fair project ideas. These science fair projects can help you find fourth grade level ideas for your science fair.

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This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

Can Crystals Show Color Mixing?

Fourth Grade
Second Grade

Soil and energy don't go together, right? That would be as bizarre as a pairing of peanut butter and marshmallows! Well, actually...

Soil Electrical Conductivity: Earthy Energy

Fourth Grade
Earth & Space Science

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

A Thunderous Sound

Fourth Grade
Second Grade

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

Magma Lamp: What Happens When a Less-Dense Fluid Interacts with a Denser One?

Fourth Grade
Geology

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

Under What Conditions Do Potatoes Sprout The Fastest

Fourth Grade
Third Grade