The project compares three different methods of testing turbidity in water: the secchi disk, spectrophotometer, and turbidity test kit.

Test whether spot magnets can help improve the symptoms of an injury.

How does smell affect taste? Ready your taste buds--in this project, you'll gather some test subjects and do a taste test to see how much smell affects taste.

Administer IQ tests to volunteers. have one group practice typical IQ test problems. Then compare results of the two groups.

This experiment investigates whether smell can be used to enhance test subjects' memories.

This science fair project evaluates if and how eating a large meal affects ability to perform mental tasks.

This experiment investigates whether left-handed test subjects have better memories than right-handed participants.

Test the idea that people who wear glasses tend to be more educated. True or false?

In this science fair project, we will test how different kinds and shades of hair respond to bleach.

Test your friends to find out if you can replicate the placebo effect's incredible results.

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

This experiment evaluates if the lighting in a room affects the speed at which test subjects perform mental tasks.

This science fair project idea studies whether eating a hearty breakfast before and exam will get them better test scores.

Gather some friends for a bubbly soda taste test do determine calories' role in your favorite drinks.

This project uses science and art to help students learn and teach others about Earth's endangered and extinct species.

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

This experiment will test whether people are better auditory or visual learners and if there is a link between gender and either of these learning types.

Test out various brands of permanent markers to see which one is least water soluble.

This experiment evaluates if a noisy environment makes it harder for test subjects to perform tasks that require hand-eye coordination.

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

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

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

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

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

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

In this experiment you will use plastic and magnets to test your local soil composition.

This middle school science fair project evaluates test subjectsâ ability to determine what a person is feeling by reading their facial microexpressions.

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

Science fair project that guides you through how to test the humidity in the environment using a homemade psychrometer.

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