Marta was studying a diagram of the rock cycle. She wanted to know what could cause a sedimentary rock to become a metamorphic rock. Which processes must occur in order for a sedimentary rock to change into a metamorphic rock?
-compaction and cementation -heating and pressure -melting and cooling - uplift and erosion​
A useful way to illustrate how the three main types of rock are related to one another and how changes to rocks happen in a recurring sequence is the rock cycle. It can be presented in a diagram like the one below.