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

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

Compare different remedies for cooling the mouth after eating spicy food.

Let your kid experiment with textures among fabric and other materials that are smooth, rough, soft, or slippery—and then they'll make a texture book!

Do different types of oil mix or stack? Find out in this science fair project idea!

How do search engines work? What makes various search engines different? This project delves into the world of web crawlers, caching, indexing and algorithms.

Compare air temperature with the infrared temperature from a reflecting surface at different times of the day, in shade and in sunlight.

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

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

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

The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

Melt the ice, but save the lawn. The objective of this science fair project is to explore the effects of different substances on melting ice.

Explore the properties of light and color using photographic filters. Take pictures of color spectrum, compare results of different filters.

Kids make strong bubbles to investigate the effect different additives have on bubble life in this cool science fair project idea.

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

Monitor the impact learning how to play chess has an academic performance. Divide subjects into two groups compare GPA

Compare the whitening abilities of four different brands of whitening toothpaste to see which one whitens the fastest and which one whitens the most.