Volcanic Eruptions Overview
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Questions and Answers

What kind of volcanic eruption is characterized by a large solid plug that shoots out to begin the eruption?

  • Pelean
  • Vulcanian (correct)
  • Plinian
  • None of the above

Which type of volcanic eruption is associated with high death tolls and large amounts of destruction due to the material quickly falling and flowing down the sides at high speeds?

  • Vulcanian
  • Active
  • Plinian
  • Pelean (correct)

What type of volcano is Mount Vesuvius known as, based on the eruption that buried Pompeii and Herculaneum?

  • Plinian (correct)
  • Vulcanian
  • Pelean
  • Dormant

Which category of volcanoes is considered active if it is currently erupting or will erupt soon?

<p>Active (B)</p> Signup and view all the answers

What does it mean when a volcano is classified as dormant?

<p>Has erupted but won't soon (D)</p> Signup and view all the answers

Which volcano has been listed as extinct due to not erupting for over 60,000 years?

<p>Kohala (D)</p> Signup and view all the answers

How is a Vulcanian eruption different from a Pelean eruption?

<p>Pelean eruptions have a large solid plug shooting out. (B)</p> Signup and view all the answers

What makes Plinian eruptions different from Vulcanian eruptions?

<p>Plinian eruptions have sustained eruptive columns. (A)</p> Signup and view all the answers

Which type of volcanic eruption is characterized by magma reaching heights between 1-10 km with a loud bang sound at the beginning?

<p>Vulcanian (C)</p> Signup and view all the answers

What distinguishes an active volcano from a dormant one?

<p>The presence of magma chamber (C)</p> Signup and view all the answers

Flashcards

Vulcanian Eruption

A volcanic eruption characterized by a large solid plug shooting out.

Pelean Eruption

A volcanic eruption with high death tolls due to fast-moving pyroclastic flows.

Plinian Eruption

Volcanic eruptions with sustained eruptive columns.

Active Volcano

A volcano that is currently erupting or is likely to erupt soon.

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Dormant Volcano

A volcano that has erupted in the past but is not currently active.

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Extinct Volcano

A volcano that is unlikely to erupt again.

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Vulcanian vs Pelean

Vulcanian eruptions blast out solid material first, Pelean involves fast flowing pyroclastics.

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Plinian vs. Vulcanian

Plinian eruptions have sustained columns, Vulcanian eruptive columns are less sustained.

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Vulcanian Eruption Characteristics

Magma reaching heights between 1-10 km with a loud bang.

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Active vs Dormant

Distinguish by magma chamber presence or absence; current activity.

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