Parts of a Volcano
A cup-shaped depression that forms around the volcano's vent.
Crater
A stationary pool of magma below Earth's crust.
Hot Spot
An opening in Earth's crust through which magma flows.
Volcano
Volcanoes tend to erupt at places where
a. two plates collide
b. two plates rub past each other
c. one plate moves under another
d. one plate moves away from another
c. One plate moves under another
Magma that reaches Earth's surface.
Lava
A line of islands.
Island Chain
A series of volcanic islands that form along a plate boundary.
Island Arc
_________ volcanoes are form by layers of ash, cinders and lava.
Composite
What forms when a volcano collapses?
A caldera.
A cone shaped volcano of cinders, with a narrow base and steep sides.
Cinder-Cone Volcano
_______ volcanoes are form by thin fluid lava and are fairly flat.
Shield
There are openings in the Earth's crust through which ___________ can flow.
Magma
A broad volcano with gently sloping sides formed from thin, fluid lava.
Shield Volcano
One plate can be pushed under another plate into the heat of the __________.
Mantle
A narrow steep mountain formed by large chunks of lava that have been thrown high in the air is a _____________ volcano.
Cinder-Cone
The Aleutian Islands are an example of a __________.
a. island arc
b. hot spot
c. composite volcano
d. tectonic plate
a. Island Arc
A large, cone-shaped volcano built from alternating layers of cinders and hardened lava.
Composite Volcano
What is Ring of Fire and where is it located?
A zone of frequent earthquakes and volcanic eruptions that encircles the Pacific Ocean.
The Hawaiian Islands are an island ________ formed as a plate moved over a stationary hot spot.