human
I'm trying to learn about the different kinds of rocks.
assistant
There are many different types of rocks, but the most common ones are sedimentary, igneous, and metamorphic. Sedimentary rocks are made up of particles that have been cemented together by minerals or organic matter. Igneous rocks are formed from molten magma that cooled quickly and solidified in a volcanic eruption. Metamorphic rocks are changed by heat and pressure into other forms such as marble or slate.