***Rock Cycle and Types of Rocks Flashcard

Front

What are the two processes that change a metamorphic rock into an igneous rock?

Back

Melting and cooling.

Front

How can igneous rocks be classified?

Back

Extrusive and Intrusive.

Front

What type of rock forms from rock layers exposed to extreme heat and pressure without melting?

Back

Metamorphic.

Front

What type of rock is formed near the mouth of a volcano?

Back

Igneous.

Front

What type of rock starts as lava that cools and then is heated and put under pressure over time?

Back

Metamorphic.

Front

What is the rock cycle?

Back

The continuous process of rock formation, breakdown, and reformation.

Front

What are sedimentary rocks primarily formed from?

Back

Particles of sand, silt, clay, and organic materials.

Front

What is the difference between extrusive and intrusive igneous rocks?

Back

Extrusive rocks cool quickly on the surface, while intrusive rocks cool slowly beneath the surface.

Front

What is metamorphism?

Back

The process by which existing rocks are changed by heat, pressure, or chemically.

Front

What is the main characteristic of sedimentary rocks?

Back

They often have layers and may contain fossils.