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How fast does light travel in different mediums? Kids conduct a cool refraction experiment in materials like water and air for this science fair project.

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

How good are humans at sound localization? Kids can try this cool science fair project idea to see how good their friends are at judging sound direction.

In this microwave plant experiment, find out whether microwave radiation will affect radish seed germination. Will it help or hinder the plants' growth?

Check out this fun science fair project idea for 1st grade: a solar eclipse model that demonstrates total, partial, and annular solar eclipses.

This cool physics demo illustrates the simple harmonic motion of a pendulum while teaching kids the important concepts of potential and kinetic energy.

Make stunning pendulum waves and learn the math behind the patterns generated with this cool and easy science project.

Melt the ice, but save the lawn. The objective of this science fair project is to explore the effects of different substances on melting ice.

What is the best stain remover for clothes? In this fun and easy science fair project idea, students will identify the best method for laundry stain removal.

What is a barycenter? Kids learn how gravity and mass influence the orbit of binary systems like planets and moons or stars and planets in this cool experiment.

Get a cool science fair project idea for middle schoolers on the effect of adding sugar to the growth of green plants.

Is there more air particulate matter in an urban or rural environment? Test your knowledge with this science fair project.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

Determine whether magic salt is more effective at melting snow than regular salt. Pour one ounce of salt over the ice cubes, compare the melt downs.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

The goal of this fun science fair project idea is to microwave candy and investigate: do some colors of M&Ms melt faster than others?

Students will investigate the thermal conductivity of metals by learning how to measure thermal conductivity with this fun and easy science fair project idea.

This baseball science fair project explores the concept of an object's center of percussion to determine if the "sweet spot" has a scientific basis.

In this fun science experiment, make a balloon car and test it on different surfaces to learn about sliding friction and rolling friction.

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

Check out this fun middle school science fair project idea on Newton's third law of motion and how you can change the speed of a rocket.

Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.

What is the coldest temperature possible? In this cool experiment, you'll calculate absolute zero by extrapolating data on the temperature and volume of gas.

How does bleach kill bacteria? Kids find out in this impressive bacteria science fair project by testing different concentrations on a safe strain of E. coli.

The objective of this experiment is to identify common materials that absorb sound waves with the greatest efficiency.

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.

The objective of this experiment is to evaluate the effects of acid rain on plants.

This science fair experiment examines the relationship between gender, age, and smiling.

The project researches how lubricants affect the mechanical advantage of a pulley.