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Parts of a Volcano
Volcanic Landforms
Vocabulary
100

What is lava called before it exits the volcano?

Magma

100
What is a hot spot?
A region of volcanic activity in the middle of a tectonic plate.
100
What are dormant volcanoes?
These volcanoes have become inactive, but people are not certain that they will not erupt again.
200

Where are magma chambers located?

At the bottom of the volcano, under the surface.

200

Where do most volcanoes occur?

Most volcanoes, like most earthquakes, occur along the plate boundaries

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200
What are Extinct Volcanoes?
Volcanoes that have not erupted in recorded history are considered to be extinct volcanoes.
300

What landform can volcanoes form?

islands

300
Why does the rock in the mantle melt?
As the tectonic plate moves under another (subduction zone), the rock in the mantle melts and becomes magma.
400

What are the 3 types of volcanoes? Name all.

Cinder cone, Shield, and Composite

400
Why does magma rise?
magma, the melted mantle, rises because it is filled with gas and is less dense than the solid rock around it.
500

what is Ring of Fire and where is it located?

A zone of frequent earthquakes and volcanic eruptions that encircles the Pacific Basin.

500
What are active volcanoes?
Active volcanoes are the volcanoes that erupt constantly.