Science fair project that compares the ecology of different soil samples by identifying which sample has the most invertebrates living in it.

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

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

Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.

The objective this science fair project is to determine whether a bigger bag will allow a homemade hot air balloon to fly higher than smaller bag.

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

This science fair project idea explores substances that cause a bubble to last longer.

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

Find out which kind of bubble wrap fares best when put in impact.

This science fair project idea recreates the movement of planetary bodies in order to learn why they sometimes appear to move backwards.

Science fair project determines relationship between number and variety of insects and spiders by collecting and counting invertebrates in a ecosystem.

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

Science fair project which uses coins flips to visually demonstrate the probability of an event and how to express it.

Does skin thickness really decrease fruit spoilage? Find out in this science fair project idea!

This science fair project idea investigates how color affects temperature.

Does your middle school teenager have good reflexes? Gauge his reaction time in this science and math activity that requires only a yardstick and a friend.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

What can you do with hair after its cut? This science project teaches you practical uses for human hair.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

This science fair project investigates why the number of visible stars changes from place to place.

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

This science fair project idea explores whether cats can be trained in the same way that dogs can.

In this Bernoulli's Principle experiment, you'll learn how an increase in the speed of a fluid, like air, decreases pressure.

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

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!