Ch4 Rocks (Chapter Review)

Front

Igneous rocks can be further classified into _______.

Back

intrusive & extrusive

Front

Intrusive rocks are _______.

Back

formed beneath the Earth's surface

Front

Extrusive rocks are _______.

Back

formed on the Earth's surface

Front

Rapid cooling lava forms fine-grained igneous rocks with _______ crystals.

Back

small

Front

Slow cooling magma forms coarse-grained igneous rocks with _______ crystals.

Back

large

Front

A material formed from oxygen and silicon.

Back

silica

Front

A rock with high silica will be _______.

Back

light colored

Front

A rock with low silica will be _______.

Back

dark colored

Front

A rock used as a good abrasive for cleaning and polishing.

Back

pumice

Front

Igneous rocks form when _______.

Back

magma or lava cools