The Rock Cycle and Earth's Layers Quiz

What process primarily forms sedimentary rocks?

• Cooling of magma

• Heat and pressure

• Weathering, erosion, and deposition

• Melting of rocks

Which type of rock is formed from the cooling and solidification of magma or lava?

• Sedimentary

• Metamorphic

• Igneous

• Crystal

What is the main process that forms metamorphic rocks?

• Cooling and solidification

• Heat and pressure

• Compaction and cementation

• Melting and cooling

Which layer of the Earth is composed mostly of solid rock and includes both the crust and the upper part of the mantle?

• Lithosphere

• Asthenosphere

• Outer core

• Inner core

The Earth's mantle is primarily made of what?

• Liquid metal

• Solid rock

• Molten rock

• Ice

What is the Earth's core primarily composed of?

• Granite

• Basalt

• Iron and nickel

• Quartz

Which type of sedimentary rock is formed by the accumulation of plant or animal debris?

• Clastic

• Organic

• Chemical

• Metamorphic

How does igneous rock become sedimentary rock?

• Melting and solidification

• Heat and pressure

• Weathering, erosion, deposition, compaction, and cementation

• Subduction and melting

What is the process called when sedimentary rock is transformed into metamorphic rock?

• Solidification

• Metamorphism

• Sedimentation

• Erosion

Which layer of the Earth is the thinnest?

• Crust

• Mantle

• Outer core

• Inner core