In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.

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

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

This science fair project tested various nose cones to determine which would be the most ideal shape for propelling a water rocket.

Learn how milk freezes into ice cream. Does the fat content affect how quickly the milk freezes? What is salt's role in the freezing process?

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

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

Check out this cool science project idea to explore the differences in feeding behaviors of birds and if other species of birds also have color preferences.

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

Science fair project which evaluates different athletic shoes in order to find out whether any of them affect a person's ability to run.

This science experiment explores why leaves change color in the fall and the role of photosynthesis in leaf coloration.

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

This science fair project idea explores whether factors such as temperature and concentration affect the pH of a solution.

Develop a new system for predicting geographic changes. Demonstrate the nature of geographic change. Make logical predictions.

Find out whether people within a family tend to have matching fingerprints.

Make a list of items that need repurposing such as e-waste, batteries and mattresses. Invent your own original repurposed design.

Test the combustion of different types of woods.

This science fair project idea investigates the hardness property of minerals.

This project examines the vulnerability of fruit flies, Drosophila melanigaster, to irradiation. Will exposure result in mutations?

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

Science fair project that helps you better understand density by comparing the relative densities of cans of Coke and Diet Coke.

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

Can you dig it? This science experiment isn't for kids who like to keep their hands clean.

This project examines whether and what associations exist between numbers and letters and colors.