igneous rocks

Front

What are igneous rocks?

Back

Igneous rocks are formed from the solidification of molten rock material (magma or lava).

Front

What is the difference between extrusive and intrusive igneous rocks?

Back

Extrusive igneous rocks form from lava that cools quickly on the Earth's surface, resulting in small crystals. Intrusive igneous rocks form from magma that cools slowly beneath the surface, resulting in larger crystals.

Front

What does the color of an igneous rock indicate?

Back

The color of an igneous rock indicates its composition, which is determined by the minerals present in the rock.

Front

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

Back

The cooling rate affects crystal size; slower cooling allows larger crystals to form, while rapid cooling results in smaller crystals.

Front

What are the main classifications of igneous rocks?

Back

Igneous rocks are classified based on their origin (extrusive or intrusive), texture (fine-grained or coarse-grained), and mineral composition.

Front

What is the primary factor that determines how rocks are classified?

Back

Rocks are primarily classified based on the way they are formed: igneous, sedimentary, or metamorphic.

Front

What is magma?

Back

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

Front

What is lava?

Back

Lava is molten rock that has erupted onto the Earth's surface.

Front

What is the texture of an igneous rock?

Back

The texture of an igneous rock refers to the size, shape, and arrangement of its crystals.

Front

What is a common example of an extrusive igneous rock?

Back

A common example of an extrusive igneous rock is basalt.