Understanding Volcanoes and Volcanology
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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?

  • Plinian
  • Pelean
  • Vulcanian (correct)
  • Strombolian
  • Which volcano erupted in 1980 after being considered dormant for over 100 years?

  • Mount St. Helens (correct)
  • Mount Vesuvius
  • Yasur Volcano
  • Mayon Volcano
  • What type of eruption is associated with high death tolls and quick material flows down the volcano sides?

  • Strombolian
  • Pelean (correct)
  • Vulcanian
  • Plinian
  • Which eruption type is named after an eruption on the island of Vulcano in the Eolian Islands?

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

    How many types of volcanoes are mentioned in the text based on their activity status?

    <p>3</p> Signup and view all the answers

    Which volcano has been erupting continuously since July of 1774?

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

    What is the name given to volcanoes that are considered extinct and predict they will never erupt again?

    <p>Extinct volcanoes</p> Signup and view all the answers

    What term is used to describe a volcano that has not erupted in a long time, but may erupt again in the future?

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

    Which of the following is NOT a characteristic of a Plinian eruption?

    <p>Large solid plug shooting out</p> Signup and view all the answers

    What is the approximate number of active volcanoes on Earth?

    <p>1,500</p> Signup and view all the answers

    What is the name given to the process where a volcano that was previously considered extinct can become active again?

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

    Which of the following statements about Pelean eruptions is NOT true?

    <p>They provide ample warning time to escape.</p> Signup and view all the answers

    Which volcano erupted in 79 AD and buried the towns of Pompeii and Herculaneum?

    <p>Mount Vesuvius</p> Signup and view all the answers

    Approximately how many volcanoes erupt annually?

    <p>50-70</p> Signup and view all the answers

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

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

    Which of the following volcanoes is listed as extinct in the text?

    <p>Kohala in Hawaii</p> Signup and view all the answers

    What is the approximate speed at which the material flows down the side of the volcano during a Pelean eruption?

    <p>150 km/hour</p> Signup and view all the answers

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