Volcanic Eruptions Quiz
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Questions and Answers

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

  • Pelean
  • Active
  • Vulcanian (correct)
  • Plinian

    • Which eruption type is associated with sustained eruptive columns reaching heights of over 45 km?

  • Vulcanian
  • Pelean
  • Plinian (correct)
  • Dormant

    • What is the key characteristic of extinct volcanoes?

  • They will erupt in the near future
  • They have never erupted before
  • Scientists predict they will never erupt again (correct)
  • They are currently erupting

    • Which volcano has been continuously erupting since July of 1774?

    <p>Yasur volcano</p> Signup and view all the answers

    What is the most dangerous aspect of Pelean eruptions?

    <p>Material quickly falling and flowing down the side of the volcano</p> Signup and view all the answers

    Which eruption type is characterized by magma reaching heights between 1-10 km?

    <p>Vulcanian</p> Signup and view all the answers

    What differentiates an active volcano from a dormant one?

    <p>Currently erupting or will erupt soon vs. has erupted in the past but not soon</p> Signup and view all the answers

    What was the name given to a type of eruption on the island of Vulcano, known for its moderate strength?

    <p>Vulcanian</p> Signup and view all the answers

    What event led to the burial of the towns of Pompeii and Herculaneum by an eruption?

    <p>A Plinian eruption</p> Signup and view all the answers

    What categorization do scientists give to a volcano that has erupted in recorded history but is not expected to erupt soon?

    <p>Dormant</p> Signup and view all the answers

    What distinguishes Pelean eruptions from other types of volcanic eruptions?

    <p>They involve a large amount of gas, dust, ash, and lava blown out from a central crater.</p> Signup and view all the answers

    What is the defining feature of Vulcanian eruptions based on the text?

    <p>Having a large solid plug that shoots out to begin the eruption</p> Signup and view all the answers

    Why are Plinian eruptions sometimes referred to as Vesuvian eruptions?

    <p>After the detailed account written by Pliny the Younger</p> Signup and view all the answers

    How are active, dormant, and extinct volcanoes classified?

    <p>By whether they are currently erupting, have erupted in history, or are unlikely to erupt again</p> Signup and view all the answers

    What differentiates dormant volcanoes from extinct ones?

    <p>Dormant volcanoes have erupted in recorded history, while extinct ones have not</p> Signup and view all the answers

    Why is predicting when a volcano will erupt considered challenging?

    <p>Because there is unpredictability in the timing of volcanic eruptions</p> Signup and view all the answers

    What process can make an extinct volcano active again?

    <p>'Rejuvenation,' where the volcano becomes active once more</p> Signup and view all the answers

    What feature characterizes Vulcanian eruptions at the start of the eruption?

    <p>A solid plug often falling as large blocks back to the ground</p> Signup and view all the answers

    What characteristic do Plinian eruptions share with Vesuvian eruptions?

    <p>The association with high death tolls and destruction</p> Signup and view all the answers

    What is considered a significant challenge in classifying volcanoes into active, dormant, or extinct categories?

    <p>The constant changes in volcanic behavior and predicted activity over time</p> Signup and view all the answers

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