This science fair project idea examines the differences between bottle water, filtered water, and tap water.

The purpose of this science fair project is to investigate whether we can simulate how craters are formed and predict their size and shape.

Does nail polish really slow the growth of nails? Explore in this science fair project idea.

The purpose of this science project is to determine which chemical best lowers the temperature of water in a cold pack and if the amount affects its use.

This experiment will explore whether fractals really repeat themselves infinitely.

This science fair project idea determines if material and tensile strength of different types of skateboard wheels affects the velocity of the skateboarder.

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

Determine how good we are at direct and indirect observation.

This science project researches the correlation between barometric pressure and wind velocity.

This interactive project invites science fair-goers to participate in examination and recording to demonstrate the importance of firsthand observation.

Science fair project that determines how we can change potential energy into kinetic energy.

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

In this plant habitats activity, children play the role of an ecologist and take surveys of different areas to discover the best habitat for dandelions.

The objective of this science fair project is to determine whether there are gender differences when boys and girls view optical illusions.

This project compares test subjects' responses to whining and other "attachment" and attention-getting sounds to determine which sounds are most distracting.

This science fair project idea investigates food preference of birds.

Learn about the field of psychophysics and to learn about "Just Noticeable Differences."

The objective of this science fair project is to examine the cleanliness of salad preparation techniques.

The purpose of this science project is to determine whether the amount of air in a soccer ball affects how far it goes when kicked.

This project examines which type of dance burns the most calories.

This fascinating science fair project explores eye color genotypes.

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

This experiment tests which gender is better at catching how a magician performs his tricks.

This project will explore whether music influences physical endurance.

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.

Science fair project that determines whether mass and weight are the same or different.

Construct calorimeter and determine the caloric value of a sample of foods by change in temperature for each of the foods.

This science fair project idea quantifies the effect of weather- in this case temperature and humidity- on musical instruments.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.