2024 Igneous

Front

What is the classification of rocks based on?

Back

Rocks are classified based upon the way they are formed.

Front

What is an igneous rock formed from lava called?

Back

An igneous rock formed from lava is called an Extrusive rock.

Front

What are mafic rocks characterized by?

Back

Mafic rocks are dark in color due to their high iron and magnesium content.

Front

What results in coarse-grained intrusive igneous rocks?

Back

Coarse-grained intrusive igneous rocks result when magma cools slowly.

Front

Do extrusive rocks have larger grains than intrusive rocks?

Back

False, extrusive rocks have smaller grains than intrusive rocks.

Front

What is the difference between extrusive and intrusive igneous rocks?

Back

Extrusive rocks form from lava that cools quickly on the Earth's surface, while intrusive rocks form from magma that cools slowly beneath the 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 primary component of magma?

Back

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

Front

What type of rock forms from the solidification of magma?

Back

Igneous rock forms from the solidification of magma.

Front

What is the significance of silica content in igneous rocks?

Back

Silica content affects the color and viscosity of igneous rocks; high silica content results in lighter-colored rocks.