Chapters 3/4 (Rocks/Minerals) Test Review

This rock is currently used to produce energy globally.

• granite

• chalk

• coal

Color alone IS enough to identify a mineral.

• True

• False

Answer explanation

Other properties must also be used as there are over 4,000 minerals that have been identified.

A ________ is a mixture of minerals, mineraloids, glass, and/or organic matter.

• mineral

• rock

• gemstone

Sandstone is classified as this type of a rock.

• igneous

• metamorphic

• sedimentary

Minerals are composed of one or more ________ of which there are 92 naturally occurring ones.

• elements

• rocks

• colors

Answer explanation

Minerals have a definite chemical compositions, which means it's made up of specific amounts of different elements.

The largest group of rock-forming minerals consists of the:

• carbonates

• silicates

• oxides

A mineral is classified as a(n) ________ as long as it's profitable and useful.

• gem

• ore

These rocks will not separate easily into layers.

• basaltic

• granitic

• foliated

• nonfoliated

Magma that cools slowly forms this type of igneous rock.

• intrustive

• extrusive

• granitic

• basaltic

Lava that cools quickly forms this type of igneous rock.

• intrustive

• extrusive

• granitic

• basaltic