Chapter 4 - Rocks

All rock is a natural, solid mixture of

• crystals

• compact sediment

• minerals or grains

Which statement is true of an igneous rock that forms deep beneath Earth's surface?

• It is always light colored

• It will have large crystals

• Its grains will be cemented together

_____is an extrusive igneous rock

• Pumice

• Sandstone

• Conglomerate

What is limestone?

• a foliated metamorphic rock

• a sedimentary rock made of calcite

• an igneous rock that formed from lava

_____is a biochemical sedimentary rock

• Chert

• Rock salt

• Rock gypsum

Metamorphic rocks form as a result of

• cementation and compaction

• extreme temperature and pressure

• melting and hardening of lava or magma

Clastic sedimentary rocks are classified by the ____of their clasts.

• color

• size and shape

• silicon content

_____rocks contain parallel layers of flat and elongated minerals

• Nonfoliated

• Foliated

• Igneous

Marble is a(n) _____ metamorphic rock

• foliated

• nonfoliated

• igneous

_____forces fluids out of sediment

• Cementation

• Compaction

• Foliation