Volcanoes and Eruptions Flashcard

Front

What is a volcano?

Back

An opening in the Earth's crust where magma erupts to the surface.

Front

What is smooth and fluid looking lava called?

Back

Pahoehoe.

Front

What is a prime example of an area over a hot spot?

Back

Hawaii.

Front

What are volcanic bombs, lapilli, and ash examples of?

Back

Tephra.

Front

Which is the fastest moving type of flow related hazard?

Back

Pyroclastic Flows.

Front

What is magma called when it erupts onto the Earth's surface?

Back

Lava.

Front

What is the term for the process of molten rock becoming solid?

Back

Crystallization.

Front

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

Back

Shield volcano.

Front

What is the term for a volcanic mudflow?

Back

Lahar.

Front

What is the difference between Aa and Pahoehoe lava?

Back

Aa lava is rough and jagged, while Pahoehoe lava is smooth and ropy.