Igneous Rocks

Front

What is lava?

Back

Lava is molten rock that erupts from a volcano and is found on the surface of the Earth.

Front

How do fine-grained igneous rocks form?

Back

Fine-grained igneous rocks form from rapidly cooling lava, which allows small crystals to develop.

Front

What are the two main criteria for classifying igneous rocks?

Back

Igneous rocks are classified based on texture and mineral composition.

Front

What is Rhyolite?

Back

Rhyolite is a fine-grained, extrusive igneous rock that forms from rapidly cooling lava.

Front

What is the difference between intrusive and extrusive igneous rocks?

Back

Intrusive igneous rocks form from magma that cools slowly beneath the Earth's surface, while extrusive igneous rocks form from lava that cools quickly on the surface.

Front

What is magma?

Back

Magma is molten rock located beneath the Earth's surface.

Front

What is the texture of igneous rocks?

Back

The texture of igneous rocks refers to the size, shape, and arrangement of the crystals within the rock.

Front

What is a felsic rock?

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Felsic rocks are igneous rocks that are rich in silica and light-colored minerals.

Front

What is an example of an intrusive igneous rock?

Back

Granite is an example of an intrusive igneous rock that forms from slowly cooling magma.

Front

What is an example of an extrusive igneous rock?

Back

Basalt is an example of an extrusive igneous rock that forms from rapidly cooling lava.