Unit 2 Lesson 4: Three Classes of Rock

Front

What type of rock is formed by the cooling and solidification of magma?

Back

Intrusive Igneous Rock

Front

What type of rock forms when minerals dissolved in a water solution crystallize?

Back

Chemical Rock

Front

Which class of rock is transformed by intense heat and pressure?

Back

Metamorphic Rock

Front

What class of rocks is formed by the cooling of molten rock or ash?

Back

Igneous Rock

Front

What type of rock forms where the remains of plants and animals are deposited in layers?

Back

Organic Rock

Front

What is the process called when sediment is compacted and cemented together?

Back

Lithification

Front

What are the three main classes of rocks?

Back

Igneous, Sedimentary, Metamorphic

Front

What type of igneous rock forms from lava that cools quickly on the Earth's surface?

Back

Extrusive Igneous Rock

Front

What is the main difference between intrusive and extrusive igneous rocks?

Back

Intrusive rocks cool slowly beneath the surface; extrusive rocks cool quickly on the surface.

Front

What is sedimentary rock primarily composed of?

Back

Particles of minerals, organic material, and other rocks.