Checkpoint 17: Rocks and Other Materials

What process is involved in the formation of igneous rocks from magma?

• cooling and crystallization

• deformation under heat and pressure

Part of a sedimentary rock erodes. What can happen to this eroded particle? (Select all that apply.)

• The particle can no longer become a part of a sedimentary rock again.

• The particle can no longer be a part of any rock type.

• The particle can eventually become part of another sedimentary rock.

• The particle can eventually become part of a metamorphic rock.

Where do igneous rocks form? (Select all that apply.)

• Igneous rocks form underneath Earth’s surface where magma cools down within the crust.

• Igneous rocks form within Earth’s mantle where magma is typically found.

• Igneous rocks form in Earth’s inner core where magma solidifies under heat and pressure.

• Igneous rocks form on Earth’s surface where magma reaches the surface.

Why do metamorphic rocks form within the Earth?

• Metamorphic rocks weather very fast and become sediment when on the surface.

• Metamorphic rocks require the pressure and heat that occurs within the Earth to form.

Why do sedimentary rocks normally form on Earth’s surface rather than underneath it?

• Sedimentary rocks have low melting points, so they melt within the Earth.

• Sedimentary rocks form weathering and erosion which occur at Earth's surface.

What factors can play a role in the formation of sedimentary rocks? (Select all that apply.)

• rivers

• magma

• cooling

• wind

Study the image of the rock cycle. The diagram is missing two “Weathering & Erosion” arrows. Where should these arrows be drawn in the diagram? Select all that apply.

• between metamorphic rock and sediment, pointing to sediment

• between sedimentary rock and magma, pointing to magma

• between sedimentary rock and sediment, pointing to sediment

• between sediment and magma, pointing to magma

Match the correct labels to the places currently labeled A, B, and C.

a

b

c

Melting

Sediment

Magma

What is the source of energy that helps form metamorphic rocks?

• high temperatures inside the Earth

• heat from the Sun

Identify the missing energy sources for A and B.

• A: high temperatures inside Earth B: heat from the Sun

• A: heat from the Sun B: high temperatures inside Earth