Practice Test 10

Use the simplified rock-cycle model below. Remember: the rock cycle does not have a fixed starting point, and rocks can change types over time.

Model pathways (process → change):

• Melting → magma
• Cooling → igneous rock
• Weathering & erosion → sediments
• Compaction/cementation → sedimentary rock
• Heat & pressure → metamorphic rock

Scenario: A rock is deep underground and is squeezed and heated for a long time, but it does not melt.

Which process in the model best explains how this rock changes into a different rock type?

Refer to the simplified rock-cycle model. It has no fixed starting point, and rocks can change types over time.

Model processes:

• Weathering & erosion make sediments.
• Compaction/cementation turns sediments into sedimentary rock.
• Heat & pressure can change sedimentary rock into metamorphic rock.
• Melting makes magma.
• Cooling turns magma into igneous rock.

Select the ONE claim that is supported by the model.