Igneous Rocks

Front

What are igneous rocks?

Back

Igneous rocks are formed from the solidification of magma or lava.

Front

What is the difference between extrusive and intrusive igneous rocks?

Back

Extrusive igneous rocks form from lava that erupts onto Earth's surface, while intrusive igneous rocks form from magma that hardens beneath the surface.

Front

What is an example of an extrusive igneous rock?

Back

Rhyolite is an example of an extrusive igneous rock.

Front

What is an example of an intrusive igneous rock?

Back

Granite is an example of an intrusive igneous rock.

Front

How do extrusive igneous rocks form?

Back

Extrusive igneous rocks form from lava that erupted onto Earth's surface.

Front

How do intrusive igneous rocks form?

Back

Intrusive igneous rocks form from magma that cools and solidifies beneath the Earth's surface.

Front

What is the texture of igneous rocks that cool quickly?

Back

Igneous rocks that cool quickly have a fine-grained texture.

Front

What is the texture of igneous rocks that cool slowly?

Back

Igneous rocks that cool slowly have a coarse-grained texture.

Front

What is the process of magma cooling and solidifying called?

Back

The process of magma cooling and solidifying is called crystallization.

Front

What is the main component of magma?

Back

The main component of magma is molten rock, which includes minerals, gases, and crystals.