Rock Cycle Concepts and Processes

The video explains the rock cycle, detailing the formation of igneous, sedimentary, and metamorphic rocks. Magma cools to form igneous rocks, which weather into sediments. These sediments compact into sedimentary rocks. Under heat and pressure, sedimentary rocks become metamorphic. If metamorphic rocks melt, they return to magma, completing the cycle.

What is the initial form of rock in the rock cycle?

• Metamorphic rock

• Igneous rock

• Magma

• Sedimentary rock

How is igneous rock formed?

• By weathering and erosion

• By compacting sediments

• By crystallizing magma

• By applying heat and pressure

Which rock type is directly formed from magma?

• None of the above

• Metamorphic rock

• Sedimentary rock

• Igneous rock

What process leads to the formation of sedimentary rocks?

• Crystallization of magma

• Compaction and cementation of sediments

• Melting of metamorphic rocks

• Cooling of lava

Which type of rock is formed under heat and pressure?

• Metamorphic rock

• Sedimentary rock

• Magma

• Igneous rock

What happens to metamorphic rock if it is pushed down into magma?

• It becomes sedimentary rock

• It crystallizes into igneous rock

• It melts and the cycle restarts

• It remains unchanged

What is the final step in the rock cycle before it restarts?

• Melting into magma

• Formation of metamorphic rock

• Formation of igneous rock

• Formation of sedimentary rock