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Measure the porosity of rocks by submerging them in water. Measure how much water each rock "drank," by measuring the difference in water volume.

Detail the chemical properties, nutritional value, medicinal effects of garlic, Write a detailed report, prepare recipes.

Determine the growth rates of different types of human hair. Ask volunteers to not cut their hair until the end of experiment. Measure hair length.

This science fair project idea explores whether factors such as temperature and concentration affect the pH of a solution.

This science fair experiment examines the relationship between gender, age, and smiling.

This science fair project idea determines exactly how much of an effect road grade has upon a cyclistâs speed.

Kids learn about the color rendering index by finding the best lightning for makeup in this fun and original physics science fair project idea.

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

In this fun science project, learn about what happens to cut fruit and experiment with how to stop apples from turning brown.

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

Science fair project in which you will graft branches from different fruit tree onto a root stalk.

Why do plants wilt? Kids will learn to think critically about what environmental factors affect plants, and what plants need to survive.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

This science fair project idea determines if the color of light affects the growth of plants.

In this activity, your child will be asked to create a boat that can successfully float while holding 25 pennies.

This science fair idea examines hydrogel superabsorbent polymer crystals. They can absorb 500 times their weight in water. Can they absorb other liquids too?

This science fair project idea determines whether the older population prefers darker, duller colors rather than bright and lush colors.

Cherries usually burst with flavor, but in this science experiment they burst with osmotic pressure. This science activity will blow your curious kid's mind!

This science fair project aims to examine the nature of pi and analyze other properties and values related to circles, such as radius, diameter

Learn about the power of exponents. The objective of this science fair project is to explore and understand how exponents are used.

Science fair project which tests which antacids are most potent by measuring how well they neutralize the acid in lemon juice.

Help kids tap into their inner inventor by teaching them how to make peanut butter through trial, error, and lots of taste testing!

It has long been believed that weather influences mood and behavior. This experiment will evaluate if weather can really impact the way people feel.

This science fair project idea produces sounds by creating vibrations using different objects.

This science fair project idea explores which is better for diffusion and cell absorbing, more surface area, or more volume.

This project explores differences in people's reactions to images in color and images in black and white.

This project examines what types of objects burn and which burn faster and cleaner.

Many substances are compounds of different elements. This experiment combines iodine and zinc to make zinc iodide.

This experiment investigates the relationship between the temperature of a candle and its burn rate.