In this experiment, students will create their own version of coquina, a sedimentary rock thatâs formed by seashells and sand, cemented by seawater minerals.

How do crystals form? In this science fair project, students will use three different saturated solutions to see how different minerals form crystals over time.

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

Fudge is one of very few desserts people make at home that is actually crystalline. What happens when the fudge crystallizes at different temperatures?

In this experiment, students will discover how heat and pressure turn clay into slate, phyllite, and finally schist.

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

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

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

Looking for a fun earth science project on continental drifts? Check out this fun science fair project idea to explore how Pangaea may have broken up.

Use dirt and different colors of craft sand to make unique layers in a clear plastic cup to represent the layers of the Earth.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

This hybrid indoor/outdoor craft results in a pretty handmade piece of jewelry thatâs easy on the eyes and the wallet!

In this science fair experiment, kids will use the acid test to discover how to tell one mineral from another.

In this science fair project, students will use four different household objects to see which ones form the most or best crystals.

Here's a fun activity to show your child how to use prefixes and root words to "root out" the meaning of a word!

In this experiment you will use plastic and magnets to test your local soil composition.

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.

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

Make thinking about college fun by working with your teen to design and plan a Road to College board game.

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

Check out this cool science fair project on identifying rocks and minerals for kids.

Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.