Sinabung Volcano Eruptions Quiz
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Questions and Answers

What type of volcanic eruption is characterized by the extrusion of lava, broken rocks, lava bombs, fine ash, and dust?

  • Plinian eruption
  • Effusive eruption (correct)
  • Surtseyan eruption
  • Phreatomagmatic eruption

    • Which type of lava flow can range from being extremely thick and viscous to highly fluid?

  • Blocky lava flow
  • Pahoehoe flow (correct)
  • Pillow lava flow
  • Aa flow

    • What are pyroclastic flows composed of?

  • Magma and ash
  • Lava and water
  • Steam and dust
  • Rocks and volcanic gas (correct)

    • Which type of volcanic mudflow is associated directly with the eruption?

    <p>Primary lahar</p> Signup and view all the answers

    What characterizes volcanic bombs?

    <p>Large boulders with a mass of several metric tons</p> Signup and view all the answers

    What is the main composition of volcanic gases that contribute to global warming?

    <p>$H_2O$ and $CO_2$</p> Signup and view all the answers

    What geographical region is known for its effusive volcanic eruptions often characterized by gentle lava flows?

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

    Which term describes hot bursts of trapped gases that rapidly move into the atmosphere?

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

    Which type of volcanic mudflow is induced by heavy rainfall rather than direct eruption activities?

    <p>Secondary lahar</p> Signup and view all the answers

    What causes pyroclastic surges to be less dense than pyroclastic flows?

    <p>Higher gas content in surges</p> Signup and view all the answers

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