Unleash the Power of Volcanoes
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Questions and Answers

What are pyroclastic flows?

  • Avalanches of hot volcanic gases, ash, and lava bombs (correct)
  • Molten rock that has been blasted into the air
  • Slow-moving lava flows from a volcano
  • Clouds of ash and volcanic bombs

    • What is the name for the molten rock that emerges from a volcano?

  • Magma
  • Volcanic bombs
  • Ash
  • Lava (correct)

    • What are volcanic bombs?

  • Molten rock that has been blasted into the air
  • Magma below the surface of the Earth
  • Avalanches of hot volcanic gases, ash, and lava bombs
  • Solid lumps of more than 64 mm in diameter formed from blasted molten rock (correct)

    • What is the liquid rock below the surface of the Earth called?

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

    What makes a volcanic eruption one of the most dangerous natural disasters?

    <p>Spewing out clouds of ash, lava, and volcanic bombs</p> Signup and view all the answers

    What do pyroclastic flows consist of?

    <p>Avalanches of hot volcanic gases, ash, and lava bombs.</p> Signup and view all the answers

    What are volcanic bombs?

    <p>Volcanic bombs are formed of molten rock that has been blasted into the air before hardening into solid lumps of more than 64 mm in diameter and falling back to Earth.</p> Signup and view all the answers

    What is the name for the molten rock that emerges from a volcano?

    <p>Lava.</p> Signup and view all the answers

    What is the liquid rock below the surface of the Earth called?

    <p>Magma.</p> Signup and view all the answers

    What are the blistering speeds of pyroclastic flows?

    <p>Up to 700 kmph.</p> Signup and view all the answers

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