Three Classes of Rock U2L4

Front

What are the three classes of rocks?

Back

Igneous, Sedimentary, and Metamorphic.

Front

What is an igneous rock?

Back

A type of rock that forms from the cooling and solidification of magma or lava.

Front

What is the difference between magma and lava?

Back

Magma is molten rock beneath the Earth's surface, while lava is magma that has reached the Earth's surface.

Front

How does the rate of cooling affect crystal size in igneous rocks?

Back

The faster the magma cools, the smaller the crystals in the rock will be.

Front

What type of rock is formed from the deposition of sediments?

Back

Sedimentary rock.

Front

What is a clastic rock?

Back

A type of sedimentary rock formed from fragments of other rocks.

Front

What is the process of sedimentation?

Back

The process by which sediments settle out of a fluid, such as water or air.

Front

What is metamorphic rock?

Back

A type of rock that has been changed by heat, pressure, or chemical processes.

Front

What is foliation in metamorphic rocks?

Back

The alignment of mineral grains in a rock, giving it a layered appearance.

Front

What is granite?

Back

An igneous rock that forms when magma cools slowly beneath the Earth's surface.