Understanding Metamorphic Rocks and the Rock Cycle

What is the primary difference between regional and contact metamorphism?

• Regional metamorphism involves intense pressure over large areas, while contact metamorphism involves less pressure and heat from magma.

• Regional metamorphism occurs near magma, while contact metamorphism occurs over large areas.

• Contact metamorphism results in foliation, while regional metamorphism does not.

• Contact metamorphism involves intense pressure, while regional metamorphism involves heat from magma.

Which sequence correctly represents the transformation of shale through regional metamorphism?

• Shale, Schist, Slate, Phylite, Gneiss

• Shale, Slate, Phylite, Schist, Gneiss

• Shale, Phylite, Slate, Schist, Gneiss

• Shale, Gneiss, Schist, Slate, Phylite

What is foliation in metamorphic rocks?

• The process of rocks melting into magma

• The alignment of minerals into bands due to pressure

• The breaking down of rocks into sediments

• The cooling and solidification of magma

Which rock is formed exclusively through contact metamorphism?

• Marble

• Hornfels

• Gneiss

• Slate

What happens to metamorphic rocks with enough heat and pressure?

• They melt back into magma

• They transform into sedimentary rocks

• They remain unchanged

• They become igneous rocks directly