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This science fair project examines which fruits and/or vegetables will ripen prematurely when placed with ripe apples.

Sure, you already know that water is made up of hydrogen and oxygen, but did you know that oxygen levels differ in different types of water?

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

Research Earthship buildings. Draft a unique architectural design that repurposes used, discarded radial tires. Build scale model of structure.

Design and build an invention inspired by Rube Goldberg's designs. Build your invention. Test the machine, write a detailed report.

This science fair project idea raises awareness of a real ecological issue.

The objective of this science fair project is to observe the properties of friction and apply this knowledge to search for a near-frictionless surface.

Study history of aerodynamics of arrow design to create a perfect arrow. Test arrows by shooting at an archery target.

Consult astronomers for opinions and advice. Devise a mathematical argument regarding the probability of other planets supporting extra-terrestrial life.

Research long-term effects and draft a questionnaire about frequency of marijuana use and average annual income. Interpret findings in a detailed report

Research information on vitamin content in foods, Examine the effect of vitamins, test organic samples of fruits, meats, grains for vitamin content.

Why do ants like sugar? Do ants like artificial sweeteners too? Kids find out with this great inquiry-based science fair project.

Free science fair project idea that examines air pollution in local environments. Particles are trapped by petroleum jelly on microscope slides.

This project examines what types of objects burn and which burn faster and cleaner.

In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.

Try this fun garden graphing project with your kindergartener this summer to give him a leg up in math and science while spending some valuable time outdoors!

Kids love the dramatic Mentos and Diet Coke experiment conducted in this awesome science fair project.

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

When you cut a flower to put into a vase, it'll eventually wilt, even with water and sunshine. But is there another scientific secret to keeping flowers fresh?

This project researches whether the type of land use affects the water quality of Queenstown Creek.

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

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

This project determines the age of a tree using a growth factor chart instead of cutting the tree down to count the rings in its base.

Your mission, if you choose to accept it, is to construct a parachute that will deliver an egg safely to the ground. Good luck!

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.

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

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.

Use a dichotomous key to identify plants or animals.

What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.

What is the hydrologic cycle and how does it work? Check out this fun and easy science project where you will model and learn about Earth's water cycle!