Understanding the Rock Cycle

What is the primary difference between lava and magma?

• Lava is cooler than magma.

• Lava is a type of mineral, while magma is a type of rock.

• Lava is melted rock above ground, while magma is melted rock below ground.

• Lava is found below ground, while magma is above ground.

Which process is necessary to form igneous rock?

• Application of heat and pressure

• Cooling of magma or lava

• Weathering and erosion

• Compaction and cementation

What characteristic is typical of metamorphic rocks?

• Noticeable banding

• Presence of small crystals

• Formation from sand

• Dull appearance

How are sedimentary rocks primarily formed?

• By melting of other rocks

• By compaction and cementation of sediments

• Through heat and pressure

• By cooling of lava

What is the role of erosion in the rock cycle?

• It breaks down rocks into smaller pieces.

• It transports rock pieces away from their original location.

• It forms new minerals.

• It cools down magma.