Volcanoes and Igneous Rocks

Front

What type of magma is associated with effusive or gentle eruptions?

Back

Mafic (basaltic) magma.

Front

Which type of volcano is characterized by runny, flowing, slow-moving lava?

Back

Shield volcano.

Front

What is the color characteristic of mafic rocks?

Back

Dark in color due to their high iron and magnesium content.

Front

Where do volcanoes typically form?

Back

Volcanoes can form at places where tectonic plates move apart, where they move together, and at hot spots.

Front

What is a caldera?

Back

A crater-shaped basin formed when a volcano collapses after a large eruption empties the magma chamber.

Front

What is the primary composition of mafic magma?

Back

Mafic magma is primarily composed of iron and magnesium.

Front

What type of eruption is associated with felsic magma?

Back

Explosive eruptions.

Front

What is a cinder cone volcano?

Back

A type of volcano formed from the accumulation of volcanic debris, typically with steep slopes.

Front

What is the difference between mafic and felsic rocks?

Back

Mafic rocks are dark and rich in iron and magnesium, while felsic rocks are light in color and rich in silica.

Front

What is a stratovolcano?

Back

A volcano characterized by a conical shape and built up by layers of lava and ash.