Igneous Rocks & Volcanoes Review

Front

How do we determine the type of rock that we have?

Back

By how the rock formed.

Front

What is the name for the mushroom/umbrella shaped pluton?

Back

Laccolith.

Front

Which type of volcano is Mt. Hood?

Back

Composite.

Front

What type of magma is associated with convergent zones, has 50-60% silica, and erupts explosively?

Back

Andesitic.

Front

What is an igneous rock?

Back

A type of rock formed from the cooling and solidification of magma or lava.

Front

What are the two main types of igneous rocks?

Back

Intrusive (plutonic) and extrusive (volcanic).

Front

What is a batholith?

Back

A large mass of intrusive igneous rock that forms from the cooling of magma beneath the Earth's surface.

Front

What is the difference between magma and lava?

Back

Magma is molten rock beneath the Earth's surface; lava is magma that has erupted onto the surface.

Front

What is a cinder cone volcano?

Back

A steep, conical hill formed from the accumulation of volcanic debris, primarily ash and cinders.

Front

What is a shield volcano?

Back

A broad, gently sloping volcano formed by the eruption of low-viscosity basaltic lava.