Test ability to distinguish between natural and artificial aromatherapy oils. Select fragrance, natural and synthetic sample. Volunteers state preference.

This project determines what percentage of test subjects react adversely to the sound of fingernails on a chalkboard and explores their physiological responses.

This science fair project idea determines what factors influence an individual's reaction time using a web-based timed reaction test.

In this science fair project, students evaluate test subjects to determine if certain personality traits are more common in frequent users of social media.

Research hemispheric brain dominance in order to determine if you have a dominant side. Test foot, ear dominance. Record observations.

This project compares test subjects' responses to whining and other "attachment" and attention-getting sounds to determine which sounds are most distracting.

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

In this science fair project, students will try to discover if test subjects can detect the presence of Monosodium Glutumate (MSG) in food.

This project will explore whether test subjects, deprived of points of reference, will, in attempting to walk a straight course, walk in circles.

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

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

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

Test your skills as a weather forecaster, and learn some science terms on the way!

Check out this silly game that will put your kid's animal habitat knowledge (and acting skills) to the test.

Tired of gum with flavor that lasts for just a couple of minute? Put gum to the test with this chewy science experiment!

Invite your fifth grader to test the different rates of liquid absorption in synthetic and cotton materials, such as nylon and cotton.

This science experiment has students test whether a snail moves faster on concrete or dirt.

Research overview of architecural acoustics. Design and build a whispering wall from wood or plastic. Test which materials work best.

Create your own light bulb and test filaments of different thicknesses to see which keeps the bulb burning for the longest time.

Test whether cutting up meats will make it cook faster than just cooking it whole.

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

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

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

In this fun project, use a memory game to test various age groups and determine whether aging directly affects short-term memory loss.

Kids make a paperclip perform an act of magnetic levitation and test how effective various materials are at magnetic shielding in this science fair project.

Set up a fun guessing game for your curious kindergartener, one that will test her ability to use all five of her senses.

Research active ingredients in anti-aging creams. Test skin creams on volunteers, document the effectiveness of the creams with before an after photographs.

Which battery lasts the longest? In this science fair project, kids will test popular brand name batteries like Duracell and Energizer against generic brands.

Devise list of randomly chosen words, test how many words volunteers can remember. Compare results of adults and children. Which have better memories?