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.

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

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

Unlike other seed sprouting projects, this one allows kids to compare five different sprouts (either 5 herbs or 5 flowers) by watching them grow in a glove.

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

This science fair project idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

Compare animal and plant fats and observe, and record, and draw conclusions about their similarities and differences.

Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.

Discover whether different amounts of water added into a wine glass will produce a different pitch when their fingers are rubbed along the rim.

This science fair project idea examines liquids of different densities.

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

This science fair project idea explores the different properties & interactions of sugar molecules.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

This science fair project idea explores the different properties of matter.

This science project teaches students to classify different shapes of leaves.

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

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

This science fair project idea explores whether white light can be separated into different colors.

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.

In this investigation, three different juices are tested to determine which juice contains the greatest amount of vitamin C.

This science fair project idea researches the different layers of the atmosphere and creates a visual representation of the atmospheric layers.

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

Science fair project in which you will learn more about the natural world by preserving and identifying different animal tracks.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.