A rock may change in many ways and may even repeat changes over and over again. A sedimentary rock may find itself changed into a metamorphic rock under pressure and heat. More heat may turn it into a molten form, or igneous rock. The effects of nature can chip and break apart the strongest igneous rock into sand that can reform into sedimentary rock. Because rocks continually change form, we can describe their changes as a cycle. The rock cycle chart shows how one class of rock may be changed into a rock of another class. Notice that there is not just one path, but many that rocks can take.
Question
What is the only type of rock that comes directly from magma?
Igneous rocks are the product of erupting or intruding magma that cools and creates rock.
