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

Examine how a battery can be made from everyday materials.

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

Wild-type and GAPDH mutant Caenorhabditis elegans were used as an example of how glucose or sugar affects the lifespan of humans.

The goal of this science fair project is to demonstrate the effects of oxidation by writing a message in invisible ink made from lemon juice.

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.

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

This science fair project idea explores whether the color of surroundings affects human mood.

This fun science fair project idea helps students learn how acid rains are formed and explore how acid rain damages the environment.

Determine whether the relationship between a personâs armspan and height are genetic.

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.

This science project allows students to study the psychology of happiness.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

Before you get ready for a delicious scramble or omelet, add a bit of science to your morning routine!

This science fair project idea determines the probability of a coin landing heads or tails.

In this experiment, kids will see if pruning tomato plants makes them more fruitful and learn about the factors that contribute to a plant's fruit production.

This fun elementary school science fair project idea helps students in designing an amusement park using their knowledge of forces and simple machines.

Learn about this simple machine and make a pulley of your own to use for fun science trials.

This science fair project idea compares whether ionic dryers leave hair in better condition than non-ionic dryers.

Science fair project that tests the correlation between outdoor temperature or weather conditions and the number of visible stars at night.

Science fair project that explores the natural process of limestone formation.

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?

Check out this hot project idea to culture bacteria and determine if the claims about the anti-bacterial properties of curry and cinnamon are true.

In this experiment, you experiment with laser jet toner, a magnetic fluid, as it moves, bubbles, and forms unique shapes.

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

Kids will make a homemade electroscope and explain how it detects static charges through induction in this fun science fair project idea.

Check out this cool science fair project idea to explore the risk of mechanical deterioration of artifacts placed in a storage box due to mold outbreaks.