Rock Classes

A combination of one or more minerals or organic matter is called

• rock

• mineral

• crystal

• molecule

The minerals a rock contains determine the ........., or makeup, of that rock.

• shape

• texture

• composition

• size

The size, shape, and positions of the grains that make up a rock determine a rock’s .....

• temperature

• composition

• texture

When magma cools and solidifies, it forms ......... rock in the crust.

• igneous

• sedimentary

• metamorphic

When magma pushes into surrounding rock below Earth’s surface, and cools, it forms .......rock

• extrusive igneous

• intrusive igneous

• foliated metamorphic

• nonfoliated metamorphic

Igneous rock that forms when lava erupts, onto Earth’s surface is called ........... rock.

• chemical sedimentary

• intrusive igneous

• extrusive igneous

• organic sedimentary

.......sedimentary rock forms when sediments are buried, compacted, and cemented together by calcite or quartz.

• chemical

• organic

• Clastic

................ sedimentary rock forms when water, which usually contains dissolved minerals, evaporates

• Chemical

• clastic

• organic

............. sedimentary rock forms from the remains, or fossils, of once-living plants and animals

• clastic

• Organic

• chemical

The metamorphic rock texture in which mineral grains are arranged in planes or bands is called

• clastic

• nonfoliated

• foliated