igneous rocks

Front

What are igneous rocks?

Back

Rocks formed from the solidification of magma or lava.

Front

What is the primary factor for classifying igneous rocks?

Back

Composition and texture.

Front

What is basalt commonly used for?

Back

Cobblestones and landscaping.

Front

What does low silica content in lava indicate about the rock color?

Back

It results in a darker-colored rock.

Front

What are the two main types of igneous rocks?

Back

Intrusive (plutonic) and extrusive (volcanic).

Front

How are intrusive igneous rocks formed?

Back

They form from magma that cools slowly beneath the Earth's surface.

Front

How are extrusive igneous rocks formed?

Back

They form from lava that cools quickly on the Earth's surface.

Front

What is an example of an intrusive igneous rock?

Back

Granite.

Front

What is an example of an extrusive igneous rock?

Back

Pumice.

Front

What is the texture of igneous rocks?

Back

It refers to the size, shape, and arrangement of crystals in the rock.