ES 9th Ch. 3 Rocks

A rock that forms when magma hardens beneath Earth’s surface is called an

• intrusive metamorphic rock.

• intrusive igneous rock.

• extrusive sedimentary rock.

• extrusive igneous rock.

A rock composed of cemented, rounded pebbles is a

• sandstone.

• shale.

• conglomerate.

• breccia.

Magma that cools deep below the earth's crust forms what type of rock?

• extrusive

• stratified

• intrusive

• clastic

Which of the following is an example of an extrusive igneous rock?

• rhyolite

• granite

• gabbro

• coal

Which of the following is an example of an extrusive igneous rock?

• rhyolite

• granite

• gabbro

• coal

A felsic igneous rock is usually identified by its color and its

• silica content

• rounded shapes

• ropy texture

• sulfur content

All of the energy that drives Earth’s rock cycle comes from

• the wind.

• Earth's interior and the sun.

• the breakdown of organic matter.

• the movement of water over Earth's surface.

Which of the following is true about rocks?

• Rocks are composed of only one mineral.

• Rocks do not contain any mineral matter.

• Coal is not considered a true rock.

• Most rocks are a mixture of minerals.

A metamorphic rock can be classified according to its

• density and texture.

• color and composition.

• texture and composition.

• density and color.

What type of rock would occur if magma cools and hardens?

• igneous rock

• metamorphic rock

• sedimentary rock

• lava