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

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

This science fair project idea investigates if fats add to the flavor of food.

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

Does dough rise faster with unbleached or bleached flour? Investigate in this science fair project idea.

This science fair project idea explores plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.

This science fair project will help students learn about non-vascular plants, such as mosses.

Science fair project about work and energy which uses a simple mathematical formula to predict how far a jar will roll down an incline.

This science fair project idea examines whether boys and girls differ in reflexes.

This science fair project idea explores whether it is easier to balance on a narrow ledge or on a rope.

This science fair project examines how seeds hitchhike on animals and clothing.

Soil and energy don't go together, right? That would be as bizarre as a pairing of peanut butter and marshmallows! Well, actually...

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.

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

In this science fair project you will make a model of a cell membrane using very simple material.

Which music genres have the fastest tempos? The slowest? This experiment determines if there's a relationship between beats per minute in a song and its genre.

This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.

Explore if planting seeds in a certain direction will affect how fast it germinates.

Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

How do organic materials become soil? This science experiment measures what materials biodegrade.

Magnets vary in strength. Have your young scientist figure out which kind of magnet is the strongest when you have him conduct this attractive experiment.

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

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

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.