Volcanoes & Igneous Rocks

Front

What is the environment of formation for igneous rocks with a grain size of 1-10 mm?

Back

These igneous rocks typically form below ground.

Front

Where is lava located?

Back

Lava is located above ground.

Front

What is a pyroclastic flow?

Back

A pyroclastic flow is a high density mixture of hot & dry rock fragments and gases.

Front

What is the texture of glassy igneous rocks?

Back

Glassy igneous rocks have a smooth, shiny texture.

Front

What is deep oceanic rock that is dark, coarse-grained, and dense called?

Back

This type of rock is known as Gabbro.

Front

What is the difference between intrusive and extrusive igneous rocks?

Back

Intrusive igneous rocks form below the Earth's surface, while extrusive igneous rocks form above the surface.

Front

What is the primary component of magma?

Back

The primary component of magma is molten rock.

Front

What is the process of magma cooling and solidifying called?

Back

The process is called crystallization.

Front

What type of volcanic eruption produces the most explosive eruptions?

Back

Stratovolcanoes produce the most explosive eruptions.

Front

What is the term for the opening in the Earth's crust through which lava erupts?

Back

The opening is called a volcanic vent.