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

Check out this cool science fair project idea to explore which other common animals besides scorpions glow under a UV Black light.

In this science fair project, students use the streak test to tell minerals apart from each other.

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

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?

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.

Introduce your fourth grader to the concepts of solstices by observing the length of her shadow on the shortest day of the year, compared to other solstices.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

This science fair project idea explores whether talking to a plant will help it grow.

Ever wonder why refrigerator lights turn off when you close the door? Does the darkness prevent food from spoiling? This experiment, determines just that.

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

Explore how dielectric heating comes into play when microwaving various liquids in this science project. This test will help you understand how microwaves work!

This science fair project explores how osmotic pressure forces water through the root up into the plant.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

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.

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

In this activity, children will let their imagination run wild as they design and build a new planet in the solar system.

Want to see a great example of Newton's first law? Kids will learn about basic physics with this fun, ballistic experiment.

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

In this experiment you explore how tectonic plates move to create land and expand bodies of water.

Learners hypothesize about and experiment with soil erosion in this hands-on activity.

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.