Volcanic Eruptions and Activity Classification Quiz
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Volcanic Eruptions and Activity Classification Quiz

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Questions and Answers

What is the main effect of a thick layer of volcanic ash from a huge volcanic eruption?

  • It can collapse the roofs of buildings due to the weight of the ash. (correct)
  • It can increase the potential for geothermal energy in nearby areas.
  • It can decrease the Earth's average temperature for a few years.
  • It can cause an increase in carbon dioxide in the atmosphere.

    • What is the main advantage of using geothermal energy?

  • It can be used to produce electricity through geothermal power plants.
  • It is a sustainable energy source that can be replenished within a human lifetime. (correct)
  • It does not contribute to global warming or climate change.
  • It is not susceptible to natural calamities like earthquakes.

    • What is the relationship between elevation and climate?

  • The higher the elevation, the warmer the climate.
  • The higher the elevation, the colder the climate. (correct)
  • Elevation has no effect on the climate.
  • The higher the elevation, the drier the climate.

    • What is the main cause of global warming?

    <p>Burning of fossil fuels.</p> Signup and view all the answers

    Why is Polaris, the North Star, used for navigation?

    <p>Polaris is fixed in the northern sky and does not change position.</p> Signup and view all the answers

    What is the main effect of the tilt of the Earth's axis?

    <p>It causes the change of seasons.</p> Signup and view all the answers

    What determines the explosiveness of a volcano's eruption?

    <p>Silica content and magma viscosity</p> Signup and view all the answers

    How are volcanic belts typically formed?

    <p>Along the boundaries of Earth's plates</p> Signup and view all the answers

    What triggers the small earthquakes that occur around a volcano before an eruption?

    <p>Upward movement of magma</p> Signup and view all the answers

    What is a characteristic of Plinian eruptions like that of Mount Pinatubo?

    <p>Explosive volcanic eruptions</p> Signup and view all the answers

    What geological factor is used to classify volcanoes as active or inactive?

    <p>Records of volcanic eruption</p> Signup and view all the answers

    What is the molten material inside the Earth ejected during a volcanic eruption called?

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

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