Understanding Volcanoes and PHIVOLCS
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Questions and Answers

What type of volcano is described as not high with a broad shape and almost no slope?

  • Phreatic volcano
  • Explosive volcano
  • Effusive volcano
  • Shield volcano (correct)
  • Which type of eruption is characterized by rapidly expanding pressurized gases breaking rocks apart violently?

  • Effusive eruption
  • Phreatic eruption
  • Effusion eruption
  • Explosive eruption (correct)
  • What type of lava eruption is associated with magma gently 'oozing' out and producing lava flows?

  • Explosive eruption
  • Phreatic eruption
  • Effusion eruption
  • Effusive eruption (correct)
  • Which type of lava is more likely to form domes during an eruption?

    <p>Sticky lava</p> Signup and view all the answers

    What causes a phreatic or hydrothermal eruption?

    <p>Contact with water</p> Signup and view all the answers

    Which type of eruption is short-lived and characterized by ash columns and may signal a more massive eruption?

    <p>Phreatic eruption</p> Signup and view all the answers

    What type of volcano is characterized by tall, symmetrical, and steep sides?

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

    Which type of volcano has the potential to erupt again despite not having erupted for a long time?

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

    What is the distinctive feature of a cinder volcano?

    <p>Formed from erupting lava breaking into small pieces</p> Signup and view all the answers

    Which institute in the Philippines is primarily responsible for mitigating volcanic eruption disasters?

    <p>Philippine Institute of Volcanology and Seismology (PHIVOLCS)</p> Signup and view all the answers

    Which classification of volcanoes erupted thousands of years ago with no possibility of further eruptions?

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

    What kind of materials does a composite volcano erupt?

    <p>Hot gases, ash, and pumice</p> Signup and view all the answers

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