Earthquake Risk and Causes
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Questions and Answers

What primarily causes earthquakes to occur along plate boundaries?

  • Tectonic plate movements resulting from seasonal temperature changes
  • The movement of magma beneath the Earth's surface
  • Friction built up from the interaction of lithospheric plates (correct)
  • The melting of rocks due to heat from the Earth's core
  • Which region is known for having a high frequency of earthquakes due to its geological features?

  • The Ring of Fire (correct)
  • The Rocky Mountains
  • The Midwest USA
  • The Great Plains
  • What type of earthquakes are generally the most powerful?

  • Moderate earthquakes occurring in volcanic regions
  • Shallow earthquakes occurring at divergent plate boundaries
  • Weak earthquakes occurring on transform fault lines
  • Deep, powerful earthquakes occurring at convergent plate boundaries (correct)
  • How do convection currents in the mantle affect tectonic plates?

    <p>They drive the slow motion of lithospheric plates</p> Signup and view all the answers

    Which of the following statements about earthquake risk is true?

    <p>Identifying active faults helps in assessing earthquake risks</p> Signup and view all the answers

    Study Notes

    Earthquake Risk

    • Geologists can determine earthquake risk by locating active faults
    • Earthquakes are most likely along plate boundaries
    • In the US, California, Washington, and Alaska are prone to earthquakes
    • Globally, the "Ring of Fire" experiences many earthquakes

    Plate Motion and Earthquakes

    • Earth's mantle currents create convection currents that cause the lithospheric plates to move
    • Plate movement is slow, like fingernail growth
    • Plates meet, slide past, or collide at plate boundaries
    • Friction builds up between plates causing stress, and this stress is released as seismic waves

    Earthquakes at Convergent Plate Boundaries

    • Earthquakes occur at convergent plate boundaries where plates collide
    • Earthquakes at convergent boundaries are deep and powerful
    • Subduction zones are areas where plates collide, and are associated with deep, powerful earthquakes.

    Causes of Earthquakes

    • Stress builds in rocks along plate boundaries.
    • The release of built-up stress causes seismic waves

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    Description

    This quiz explores the causes of earthquakes, focusing on plate tectonics and the movement of lithospheric plates. It highlights key regions prone to earthquakes and the dynamics of seismic activity at convergent plate boundaries. Test your knowledge about earthquake risks and the geological processes behind these natural phenomena.

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