Rock Classification

When molten rock undergoes crystallization above ground, what type of rock results?

• Intrusive igneous rock

• Extrusive igneous rock

• Metamorphic rock

• Sedimentary rock

What combination of processes can transform a metamorphic rock to sediments?

• Erosion, crystallization, and melting.

• Heating, pressure, and lithification.

• Melting, crystallization, and compaction.

• Exposure, weathering, and erosion.

What sequence of events could lead to magma becoming soil?

• Erosion and deposition followed by exposure to heat and pressure.

• Compression and lithification followed by erosion and deposition.

• Crystallization followed by exposure and weathering.

• Crystallization followed by increased heat and pressure.

Which of the following rock types form from placing other rocks under heat and pressure?

• Sedimentary rock

• Metamorphic rock

• Intrusive igneous rock

• Extrusive igneous rock

According to the rock cycle, which of the following transitions are possible? Assume an unlimited number of steps.

• An intrusive igneous rock becomes a sedimentary rock.

• A sedimentary rock becomes soil.

• A metamorphic rock becomes an extrusive igneous rock.

• All of the above are possible.

If you examine a rock sample and observe fossils in it, what type of rock does the sample represent?

• Igneous

• Metamorphic

• Sedimentary

• Fossils are found in several of the types listed above.

Which of the following is a sample of igneous rock?

• Sample A

• Sample B

• Sample C

• Sample D

The location marked by the black rectangle is characterized by high temperature and pressure. What rock type would most likely be formed in this location?

• Igneous

• Metamorphic

• Sedimentary

• None of the above

Where would the rock sample shown be formed in the diagram below?

• Location A

• Location B

• Location C

• Location D

Which of the rock samples below is most likely to be a metamorphic rock?

• Sample A

• Sample B

• Sample C

• Sample D