Volcano Flashcard Review

Front

Where do volcanoes come from?

Back

Volcanoes originate from places where tectonic plates move apart, where they are moving together, and from hot spots.

Front

Rhyolitic magma-fueled volcanoes are especially explosive because rhyolitic magma is highly viscous and contains a large volume of trapped gas. True or False?

Back

True

Front

The most explosive volcanoes are _____________.

Back

Composite volcanoes.

Front

What do we call molten hot liquid rock once it erupts to the Earth's surface?

Back

Lava.

Front

These volcanoes are usually small and have a large crater. They are made from short-lived eruptions where lava and rock are blown into the air, cool, and fall back down unto the volcano's sides. What are they called?

Back

Cindercone volcanoes.

Front

What is the term for the molten rock beneath the Earth's surface?

Back

Magma.

Front

What type of volcano is characterized by broad, gentle slopes and primarily erupts basaltic lava?

Back

Shield volcano.

Front

What is the primary factor that determines the explosiveness of a volcanic eruption?

Back

The viscosity of the magma and the amount of gas it contains.

Front

What are the two main types of volcanic eruptions?

Back

Effusive eruptions and explosive eruptions.

Front

What is a hot spot in relation to volcanoes?

Back

A hot spot is a location where magma from deep within the Earth's mantle rises to the surface, creating volcanoes.