Rocks and Rock Cycle Review

How are sedimentary rocks formed?

• form from heat and pressure

• form from magma or lava when it cools

• form from compaction and cementation

How are metamorphic rocks formed?

• form from heat and pressure

• form from magma or lava when it cools

• form from compaction and cementation

How are igneous rocks formed?

• form from heat and pressure

• form from magma or lava when it cools

• form from compaction and cementation

What is a rock?

• Always made of molten material

• A mixture of minerals, organic matter, volcanic glass, or other material

• A pure mineral

• Either igneous or sedimentary

Sedimentary rocks are usually classified as clastic, chemical, or organic

• True

• False

Igneous rocks are usually classified as intrusive or extrusive

• True

• False

Metamorphic rocks are usually classified as foliated or nonfoliated

• True

• False

Pumice, obsidian, & scoria are kinds of

• extrusive igneous rock

• metamorphic rock

• intrusive igneous rock

• Sedimentary Rock

Which type of rock is coal?

• intrusive igneous

• organic sedimentary

• extrusive igneous

• clastic sedimentary

Gneiss and schist are examples of

• sedimentary rock

• foliated metamorphic rock

• igneous rock

• non-foliated metamorphic rock