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Kids learn about Brownian motion, diffusion, and how temperature is a key factor affecting the rate of diffusion in this cool science project.

Which type of sunglass lenses gives you the best protection from the sun's harmful UV rays? Find out in this cool science project!

Science fair project that tests how heat affects the chemical reaction between a seltzer tablet and a glass of water.

This science project involves comparing the relative effectiveness of salt, pepper and dehydration in food preservation.

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

Look for a correlation between temperature and the intensity of cricket chirping. Measure ambient temperature and sound intensity in decibels.

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.

Learn about the field of psychophysics and to learn about "Just Noticeable Differences."

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

The goal of this science fair project was to evaluate the ElectroMagnetic Field produced by Radio Frequency Identification transmitters.

This experiment evaluates if people of a specific gender or age more likely have an elevated number of taste buds, allowing them to taste what others cannot.

In this project, you will observe and record changes in sunspots over two weeks.

Research responsibilities of physicists, and common thinking patterns. Devise a questionnaire that measures career aptitude in physics.

The objective of this free science fair project is to examine the way in which the phases of the moon affect circadian patterns in mammals.

Check out this science project idea that will have your kid investigate how dots (also known as pixels) are used to create digital photographs.

Science fair project that compares the ecology of different soil samples by identifying which sample has the most invertebrates living in it.

This science fair project idea focuses on two classes of sugars monosaccharides (fructose) and disaccharides (sucrose or table sugar).

Check out this fun science project idea to get a better understanding of unstable isotopes and the process of radioactive decay of isotopes through modeling.

Find a mathematical relationship between the intensity of a sound wave and distance from the sound source. Use a pedometer and a sound level meter.

Science fair project that helps visualize how the human brain functions by constructing a model of a brain.

The scientific purpose of this experiment is to investigate which material is the best packaging for fragile items during shipping.

This science project has students study the idea of human beauty.

Find out the differences (if any) in the frequencies of voices produced from a computer, from a phone, and directly coming out of the voice box of a human.

Science fair project which examines the relationship between frequency of spider web vibration and spider's response time.

It's the day before the test, and you still have a ton to memorize! Sound familiar? Test memorizing techniques to help yourself out next time.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

A cool physics science fair project idea for 7th grade exploring the application of distance, velocity, and time equations.

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

Research different measurement systems, design your own new or improved system that can measure something difficult to measure with traditional systems.

Learn about calorimetry, make a bomb calorimeter, and experiment with combusting different nuts to see which one produces the most energy!