Rocks and Minerals Review

Front

What type of rock results from melting and cooling of magma?

Back

Igneous rock.

Front

What is the name of an igneous rock composed of 58% plagioclase feldspar, 26% amphibole, and 16% biotite?

Back

Diorite.

Front

What is a fine-grained igneous rock composed mostly of plagioclase feldspar and hornblende classified as?

Back

Andesite.

Front

What processes lead directly to the formation of igneous rock?

Back

Melting and solidification.

Front

What provides the best evidence for determining the cooling rate of an igneous rock during its solidification?

Back

The crystal size of its minerals.

Front

What are the three main types of rocks?

Back

Igneous, sedimentary, and metamorphic.

Front

What is the process called when rocks are broken down into smaller pieces?

Back

Weathering.

Front

What is the process of sediments being pressed together to form sedimentary rock?

Back

Compaction.

Front

What type of rock is formed from the alteration of existing rock due to heat and pressure?

Back

Metamorphic rock.

Front

What is the term for the molten rock beneath the Earth's surface?

Back

Magma.