The Rock Cycle and Making Magma

What is a rock?

• A naturally occurring, inorganic solid, with a specific chemical composition and a crystalline structure

• An aggregate of one or more minerals or mineral crystals.

• Weathered material from sediment

• Liquid magma

The rock type formed by cooling and crystallization of magma or lava is

• Igneous

• Sedimentary

• Metamorphic

• Lithified

The rock type formed by lithification of sediment is

• Igneous

• Sedimentary

• Metamorphic

• Weathered

The process of changing a rock through heat and pressure without melting is

• magma

• lithification

• erosion

• metamorphism

Which of the following processes causes melting of rock at subduction zones? Select all that apply.

• Hydration (or flux) melting

• Increased pressure

• Rearrangement of molecules

• Increased temperature