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Questions and Answers
Volcanic earthquakes are caused by the movement of magma associated with volcanic activity.
Volcanic earthquakes are caused by the movement of magma associated with volcanic activity.
True
The hypocenter of an earthquake is the surface impact located directly above the focus of the earthquake.
The hypocenter of an earthquake is the surface impact located directly above the focus of the earthquake.
False
Tectonic earthquakes are caused by the abrupt slipping of tectonic plates.
Tectonic earthquakes are caused by the abrupt slipping of tectonic plates.
True
Tephra is a type of volcanic gas released during an eruption.
Tephra is a type of volcanic gas released during an eruption.
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A dormant volcano is one that is not expected to erupt again in the future.
A dormant volcano is one that is not expected to erupt again in the future.
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A volcano is considered active if it has erupted during the last $10,000$ years.
A volcano is considered active if it has erupted during the last $10,000$ years.
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The crust is the thickest layer of the Earth.
The crust is the thickest layer of the Earth.
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Volcanic earthquakes are exclusively caused by the movement of tectonic plates.
Volcanic earthquakes are exclusively caused by the movement of tectonic plates.
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The lithosphere is a part of the Earth's upper mantle.
The lithosphere is a part of the Earth's upper mantle.
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Divergent boundaries are plate boundaries where tectonic plates move towards each other.
Divergent boundaries are plate boundaries where tectonic plates move towards each other.
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Seafloor spreading is a process where new ocean floor is created as two lithospheric plates move towards each other.
Seafloor spreading is a process where new ocean floor is created as two lithospheric plates move towards each other.
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The asthenosphere is a weak, plastic rock layer just beneath the lithosphere.
The asthenosphere is a weak, plastic rock layer just beneath the lithosphere.
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A subduction zone is a plate boundary where two tectonic plates move away from each other.
A subduction zone is a plate boundary where two tectonic plates move away from each other.
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The lithosphere is made up of the crust and the upper part of the mantle.
The lithosphere is made up of the crust and the upper part of the mantle.
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Mantle plumes are areas of cooler magma beneath the Earth's crust.
Mantle plumes are areas of cooler magma beneath the Earth's crust.
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Aftershocks are small earthquakes that occur after a volcanic eruption.
Aftershocks are small earthquakes that occur after a volcanic eruption.
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The Earth's internal heat is primarily generated by radioactive decay within the planet.
The Earth's internal heat is primarily generated by radioactive decay within the planet.
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A transform boundary is a plate boundary where two tectonic plates slide horizontally past each other.
A transform boundary is a plate boundary where two tectonic plates slide horizontally past each other.
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