The Rock Cycle
Igneous, Sedimentary, and Metamorphic Rock
How the Rock Cycle Works:
* Igneous rocks are formed when hot liquid rock called magma cools and solidifies.
* Metamorphic rocks are formed by the physical or chemical alteration by heat and pressure to become a denser form of rock.
* Sedimentary rocks are often formed when weathering and erosion break down a rock into loose material.