Rock Cycle

What is Earth's solid exterior made of?

• Liquid magma

• Ice and snow

• A single type of mineral

• A huge variety of rocks

How are some rocks being formed today?

• By the cooling of the sun

• As active volcanoes spew lava

• Through the process of photosynthesis

• By the freezing of water

What are the two types of crust on Earth?

• Silicon and aluminum

• Iron and nickel

• Continental and oceanic

• Mantle and core

What is magma that cools and solidifies beneath Earth's surface called?

• Extrusive igneous rock

• Metamorphic rock

• Intrusive igneous rock

• Sedimentary rock

What causes rocks to change into sedimentary rock?

• Expansion of the universe

• Eruption of volcanoes

• Pressure from the weight of material above

• Cooling of lava

What is granite an example of?

• Extrusive igneous rock

• Intrusive igneous rock

• Sedimentary rock

• Metamorphic rock

What does the term 'felsic' refer to in rocks?

• Lacking in silicon

• Rich in light colored, lighter weight minerals

• Only found in the oceanic crust

• Rich in dark, heavy minerals

How do sedimentary rocks form?

• From high pressure and temperature changes

• From the cooling of magma

• From the melting of ice

• From the compaction and cementation of sediments

What is the process called when existing rock changes into a new rock type due to intense temperature and pressure?

• Crystallization

• Metamorphism

• Sedimentation

• Erosion

What is the outer core of the Earth made of?

• Molten iron

• Liquid silicon

• Solid iron and nickel

• Granite