Rocks

What are the three main types of rock? How can things in water turn into rock? Can rocks help us heat our homes? Find out answers to these questions and many more in this fun introduction to rocks. Explore different types of rocks by finding out how and why they formed, how they have changed over time, what they look like and what they’re made of. With the help of Rock Solid! facts and cool examples, you’ll discover how amazing rocks can be, from the Grand Canyon to hot lava to the world’s biggest cave.