A
A volcano is an opening in the Earth’s ________.
Surface
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The largest active volcano is ________?
Mauna Loa
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Melted rock on the surface is called ________.
lava
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Smooth flowing lava is called the ________.
Pahoehoe
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A chain of volcanic islands is an ________ arc.
Island Arc
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Hot gas + lava mixture is called ________.
Pycroclastic Flow
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A volcano that stopped erupting is called a/an ________ volcano.
Inactive Volcano
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Mudflow from ash and rain is called ________ flow.
Lahar
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When plates move apart: ________ boundary.
spreading
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The opening at the top of the volcano is the ________.
Crater
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A gentle eruption is ________ eruption.
Quiet Erruption
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Melted rock beneath the Earth is called ________.
magma
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Volcanoes form along plate ________.
Boundaries
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Scientists use a ________ to detect earthquakes near volcanoes.
Seismograph
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Volcano formed away from boundaries are ________ volcano.
Hot-spot Volcanoes
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Rough, chunky lava is called ________.
A'A
Magma on the surface is called ________.
Lava
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A violent eruption is ________.
Explosive Erruption
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A volcano not erupted for 10,000 years is ________.
Extinct Volcano
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When plates push together, it is called a ________ boundary.
Colliding boundary
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A deep valley at a spreading boundary is a ________ valley.
Rift
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The magma storage is called the ________?
Magma Chamber
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One plate sinking under another is called ________.
subduction
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Lava, ash, gas, and ________ are released.
rocks
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Volcanoes usually form at plate ________.
Plate Boundaries