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

The goal of this science fair project is to assess the acidity levels of common food and household products using pH test strips.

Is exercise a cellular activity? Check out this fun science fair project idea to compare the carbon dioxide production before and after exercise.

Study how we perceive color by exploring optical illusions such as pointillism, digital images, and Ishihara tests.

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

Can a horse lead itself to the carrot? Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.

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

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

A fun, life science sxperiment idea idea involving strategies for keeping birds away from crops using a distress call. What kind of distress call works best?

Glass is see-through, but usually you can still see that it is there. In this experiment, we use baby oil to make glass go completely invisible.

This project examines the concentration of dissolved oxygen in water, with and without oil.

This science fair project studies which color(s) of flowers butterflies & bees are attracted to and if color plays a role in flower selection for pollination.

Science fair project that uses iodine vapors to develop latent fingerprints on a non-porous object.

Study the physical and chemical changes that make hair curl or straighten. Study ingredients, function of chemicals like thioglycolic acid.

Examine spreadsheet functions and design a new way to utilize spreadsheets. Analyze a spreadsheet program to familiarize yourself with its capabilities.

This science fair project idea discovers whether plants grow best in chemical fertilizer, organic fertilizer, or with no fertilizer at all.

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

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

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

Find out if most people can distinguish the difference between tones on different instruments.

Science fair project that studies how perfumes are made in order to determine how we can capture a scent.

Identify vitamin C in fruit juices and to determine which of the following juices contain the most vitamin C

Total alkalinity and pH personal care products are controlled to prevent skin irritation. Learn more about basic and acidic substances in this science project.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

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

Science fair project that identifies the nature of ionic and covalent bonds and determines how ionic and covalent compounds differ.

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

Cinnamon is tasty, but does it have super powers as well? Find out if cinnamon can repel mosquitoes in this outdoorsy experiment.

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