The Rock Cycle

A sedimentary rock along a plate boundary is forced below another plate during subduction. What will most likely happen to the rock immediately following subduction?

• Cooling will change the sedimentary rock into igneous rock.

• Cementation will change the sedimentary rock into igneous rock.

• Increased heat and pressure will change the sedimentary rock into metamorphic rock.

• Erosion and deposition will change the sedimentary rock into new sedimentary rock.

Antelope Canyon in Arizona is surrounded by sandstone, a sedimentary rock. What process most likely carved the canyon from the surrounding rock?

• melting

• pressure increase

• subduction

• weathering

Granite is a rock formed from the cooling of magma. When granite is exposed to elements such as wind and water, it weathers and erodes and the particles are deposited. Pressure causes these and other particles to form sandstone at Earth's surface. What types of change occurs in this process.

• Sedimentary rock becomes igneous rock.

• Igneous rock becomes sedimentary rock.

• Igneous rock becomes new igneous rock.

• Sedimentary rock becomes new sedimentary rock.

A certain sample of limestone formed when shells from organisms were buried under layers of sediment and experienced pressure. A student classifies the sample as clastic sedimentary rock. What is one problem with this classification?

• Clastic sedimentary rock forms deep below Earth's surface, not at Earth's surface.

• Clastic sedimentary rock forms from sediment, not from the remains of organisms.

• Clastic sedimentary rock forms because of a volcanic eruption, not because of weathering.

• Clastic sedimentary rock forms when materials are heated by nearby magma, not when they are exposed to pressure.

A student wants to classify a certain metamorphic rock. Which of these features would show that the rock is foliated?

• The rock has large crystals.

• The rock is rich in calcium.

• The grains of the rock are aligned in patterns.

• The fragments that make up the rock are coarse.

What are the processes an igneous rock must go through to become a sedimentary rock?

• heat and pressure

• weathering, erosion and lithification

• melting and cooling

What kind of rock is formed when molten rock cools below Earth's surface?

• Sedimentary

• Metamorphic

• Intrusive igneous

• Extrusive igneous