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!

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

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

In this activity, your child will experience multitasking, then mindfulness and compare the two in terms of productivity and calmness.

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

Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.

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 measures and compares effects of chemical weathering, specifically carbonation, on different kinds of rocks.

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

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.

Do lefties just write different or are their brains different? This science project has students explore what it means to be left handed.

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.

Science fair project that determines whether mass and weight are the same or different.

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

Check out this science project idea to compare organic produce to non-organic produce and how preservatives in food extend the shelf life of goods.

In this project, different childproof containers are tested to see how childproof they really are.

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

This experiment examines whether storing your orange juice at different temperatures affects its acidity.

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

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.

Young artists will combine two animals into one in this imaginative art-project-slash-game!

Science fair project which determines whether plants are able to get enough nutrients from different types of garbage.