Earthquakes

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Questions and Answers

Scientists compare the strength of one earthquake with another using which scale?

  • Seismic scale
  • Richter scale (correct)
  • Mercalli scale
  • Magnitude scale

Which scale is used to describe the amount of damage caused by an earthquake?

  • Mercalli scale (correct)
  • Richter scale
  • Magnitude scale
  • Seismic scale

What is molten rock from the mantle called when it is moving upward through the Earth's crust?

  • Magma (correct)
  • Sedimentary rock
  • Igneous rock
  • Lava

What is molten rock from the mantle called once it is on the Earth's surface?

<p>Lava (A)</p> Signup and view all the answers

What are the underwater mountain chains formed when two oceanic plates move apart called?

<p>Mid-ocean ridges (C)</p> Signup and view all the answers

Which of the following best describes a volcanic eruption?

<p>The release of molten rock, gases, and ash from a volcano (B)</p> Signup and view all the answers

Where do volcanoes usually occur?

<p>On land (A)</p> Signup and view all the answers

What causes a tsunami to occur?

<p>The movement of oceanic plates at their boundaries (C)</p> Signup and view all the answers

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