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Volcano Facts
Volcano Types
Eruptions
Volcano Formation
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100

The long tube that connects the magma chamber to the Earth's surface is called....

What is the central vent.

100

A major volcanic belt known as the __________ circles the Pacific Ocean.

What is the Ring of Fire

100

This type of volcano is currently erupting or will erupt in the future. 

What is an active volcano

100

When two plates meet what is the determining factor of which plate will sink into the mantle. 

The more dense plate will sink. 

100
The bowl shaped area around a volcano's central vent is a....
What is a crater.
200

If a volcano has magma that is high in pressure it will probably have an ___________ eruption.

What is explosive.

200
Alternating layers of lava and ash create ___________ volcanoes.
What is composite.
200

A volcano that will not erupt again. 

An extinct volcano.

200

At a mid-ocean ridge lava moves upward an fills in the cracks as the plates move _____. 

Away from each other. 

200

Volcanic islands were created by the build up and solidification of  ________ over a long period of time. 

what is lava

300
True or False a dormant volcano is a volcano that will erupt in the near future. 

What is false.... an active volcano

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

The Hawaiian Islands were formed over this weak spot in the Earth's crust. 

What is a hot spot 

300
_________ trapped in the magma under pressure provide the force for volcanic eruptions.
What is gases.
400

The smallest particles that are created by a volcanic eruption and are often shot out into a cloud during an eruption is known as _________.

What is ash.

400

Long cracks in the Earth fill with thin runny lava create this ______.

What is a lava plateau.

400
Large, Semi-solid chunks of magma that are shot out into the air during an eruption. 

What are bombs. 

400

Underneath a deep ocean trench is where ________ are located  and is how many volcanoes are formed. 

What is a subduction zone. 
400
The huge hole left behind when a volcano collapses is called ...
What is a caldera.
500
Underground water heated by magma that sprays out of the Earth creates a __________.
What is geyser.
500

Thin, runny lava and quiet explosions produce _________ volcanoes.

What is a shield volcano

500
Pyroclastic flows usually occur during a(n) _________ eruption.
What is explosive.
500
Volcanoes that form along a mid-ocean ridge occur at....
What is diverging plate boundaries.
500
Mount St. Helen's volcano is an example of....
What is an explosive eruption.