Volcano Formation and Eruption Quiz
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Questions and Answers

How is a volcano formed?

  • By the cooling and hardening of lava on the Earth's surface
  • By the accumulation of rainwater in deep underground reservoirs
  • By the release of gases and materials through a vent in the Earth's crust (correct)
  • By the evaporation of ocean water due to intense heat from the Sun

    • What causes an eruption in a volcano?

  • Rapid growth of volcanic mountains
  • Building pressure under the Earth's crust (correct)
  • Cooling of magma within the Earth
  • Movement of molten lava on the surface

    • What forms a volcanic pipe that allows magma to escape?

  • Solidification of lava on the Earth's surface
  • Pressure buildup in the mantle layer (correct)
  • Accumulation of rainwater near the volcano
  • Cooling of gases within the volcano

    • What characterizes a volcanic mountain?

    <p>Formation over a magma chamber with accumulated rock fragments</p> Signup and view all the answers

    What is the main cause of volcanic eruptions?

    <p>Friction between tectonic plates</p> Signup and view all the answers

    Why does magma move towards the surface during a volcanic eruption?

    <p>Pressure from the mantle layer pushing it upward</p> Signup and view all the answers

    Which statement best explains how ash forms during a volcanic eruption?

    <p>Cooling and hardening of liquid magma into small particles</p> Signup and view all the answers

    What is the name given to the depression that forms on top of a volcano after an eruption?

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

    Which of the following is a volcanic landform that results from thick, viscous lava that does not flow easily?

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

    What type of volcanic eruption results from a crack or fissure in the Earth's crust, without a volcanic pipe or vent?

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

    Which of the following is a type of volcano that forms from a build-up of gas and erupts forcefully?

    <p>Maar-diatreme</p> Signup and view all the answers

    What is the name given to a wide, flat area of cooled lava that results from a volcanic eruption?

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

    Which of the following is a type of volcano that forms from forceful eruptions of ash and cinders, resulting in a cone shape with a crater in the center?

    <p>Cinder cone</p> Signup and view all the answers

    What type of volcano is characterized by thin, runny lava that travels far from the original eruption site?

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

    Which of the following is a type of volcano that is typically large, with steep sides and layers of hardened lava, rock, and ash?

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

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