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In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

The objective of this project is to evaluate whether a top will spin at different rates during different phases of the moon.

This science fair project idea explores the fastest average speed a human can talk.

Determine whether cats have dominant paws. Observe which paw cat uses to reach for treats, feather, and string. Calculate percentage for two paws.

Determine if left-handed people have faster response times.

This science fair project examines the different composition of fungi and plants.

This experiment investigates whether the Ranschburg Effect is observed more frequently in older or younger adults.

Science fair project that examines the relationship between fluid flow rate, pressure, and resistance.

Check out this cool science project idea to explore how temperature creates annual rhythms that govern plant growth.

Check out this fun high school science fair project idea to investigate how the cell membrane regulates what moves into and out of cells.

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

Learn about the anatomy of the autonomic nervous system and its relationship to the rest of the body.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

What's the difference between centripetal and centrifugal force? Students find out by seeing both in action as they conduct this experiment.

Do people only "hear" what they want to hear? Explore pareidolia and psychoacoustics with this easy science fair project that pits melody against white noise.

This science fair project idea compares the cuteness reaction between genders.

Start your toy engines -- this is going to be a fast and friction-filled race!

Science fair project that evaluates how well clothing fabrics block UV radiation by examining the properties of different fabrics.

In this fun science fair project idea learn about the multiple sources of radio waves and fin out how difficult it is to block them.

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

Examine the influence of the phase of the moon on moisture capillarity in garden soil. Measure and record the depth at which water is first detected.

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

Science fair project that uses distillation to convert salt water into fresh water.

Measure the effectiveness of detergent containing a UV-absorbing compound in blocking UV-A radiation. Use black light and UV detecting beads.

This project concerns activity happening millions of miles away, on the sun.

Science fair project that determines whether brain size is correlated with intelligence.

Science fair project that creates a pamphlet to help others learn about Epilepsy, its causes, symptoms and treatments.

Score a bull's eye with this cool science fair project on horizontal projectile motion. Guide a marble to its target and predict its trajectory using math!