Igneous Rock Identification

Front

What is the definition of igneous rock?

Back

Igneous rock is formed from the solidification of molten rock material (magma or 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

Name an example of an intrusive igneous rock.

Back

Granite.

Front

Name an example of an extrusive igneous rock.

Back

Obsidian.

Front

What is the texture of basalt?

Back

Basalt typically has a fine-grained texture due to its rapid cooling.

Front

What is pumice and how is it formed?

Back

Pumice is a light, porous volcanic rock formed when lava cools quickly and traps gas bubbles.

Front

What type of magma is associated with basalt?

Back

Basalt is associated with mafic magma, which is low in silica and high in iron and magnesium.

Front

What is the rock cycle?

Back

The rock cycle is a continuous process where rocks are formed, broken down, and reformed through geological processes.

Front

True or False: All igneous rocks are formed from the same type of magma.

Back

False. Different types of magma can lead to different types of igneous rocks.

Front

What is the primary characteristic of obsidian?

Back

Obsidian is known for its glassy texture and is formed from rapidly cooled lava.