Volcano Facts
Volcano Types
Volcano Lava
Volcano Landforms
More Volcanoes
100
The long tube that connects the magma chamber to the Earth's surface is called....
What is the pipe.
100
Thin, runny lava produces _________ volcanoes.
What is shield.
100
_________ trapped in the magma under pressure provide the force for volcanic eruptions.
What is gases.
100
Hardened magma that remains in the pipe when softer material wears away is called ...
What is a volcanic neck.
100
The huge hole left behind when a volcano collapses is called ...
What is a caldera.
200
If a volcano has magma that is high in silica it will probably have an ___________ eruption.
What is explosive.
200
Alternating layers of lava and ash create ___________ volcanoes.
What is composite.
200
Pyroclastic flows usually occur during a(n) _________ eruption.
What is explosive.
200
A large mass of rock that forms from cooled magma under the crust is called a(n) ______________.
What is batholith.
200
The bowl shaped area around a volcano's central vent is a....
What is a crater.
300
The smallest particles that are created by a volcanic eruption are known as _________.
What is ash.
300
Volcanoes made of primary ash, cinders and bombs are known as _______ volcanoes.
What is cinder cone.
300
During a quiet eruption, lava flows very _________ and will ________ everything in it's path.
What is slowly and burn.
300
Magma that "squeezes" between the horizontal layers of rock forms a ________.
What is sill.
300
The magma that forces layers of rock to bend upward into a landform called.....
What is a dome mountain.
400
Underground water heated by magma that sprays out of the Earth creates a __________.
What is geyser.
400
When the tip of the volcano collapses in on itself it creates a _________.
What is caldera.
400
The most common place to find volcanoes would be.....
What is along mid-ocean ridges and where a plate is subducted.
400
Magma that forces its way "across" the rock layers hardens to form a _______.
What is dike.
400
Volcanoes that form along a mid-ocean ridge occur at....
What is diverging plate boundaries.
500
A dormant volcano is a volcano that can erupt in the near future? (True or False)
What is false...an active volcano.
500
Cooler lava that moves slowly and hardens into rough chunks is known as _____.
What is aa.
500
The Hawaiian Island were formed by thin runny lava that has a ________ amount of silica.
What is a low.
500
A major volcanic belt known as the __________ circles the Pacific Ocean.
What is Ring of Fire.
500
Mount St. Helen's volcano is an example of....
What is an explosive eruption.
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