Structural Effects of Earthquakes Overview
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Questions and Answers

What are the three main categories that effects of earthquakes can be divided into?

  • Tsunamis, seiches, fires
  • Landslides, fault creep, ground subsidence
  • Ground failure, indirect effects, ground shaking (correct)
  • Surface rupture, ground cracking, soil liquefaction
  • Which of the following is NOT an indirect effect of earthquakes?

  • Fires
  • Ground failure (correct)
  • Tsunamis
  • Seiches
  • What type of ground failure involves the movement of the ground surface at a location where geological fissures or faults slip slowly or suddenly?

  • Surface faulting (correct)
  • Soil liquefaction
  • Ground subsidence
  • Landslides
  • Which type of ground failure involves rocks breaking through to the surface due to relative movement on both sides of a fault?

    <p>Surface faulting</p> Signup and view all the answers

    Why is sudden movement in ground failures considered more damaging?

    <p>It is associated with ground shaking</p> Signup and view all the answers

    What is the main cause of ground subsidence during earthquakes?

    <p>Compaction effect resulting in denser soil settlement</p> Signup and view all the answers

    Which type of soil is most susceptible to soil liquefaction?

    <p>Granular sand</p> Signup and view all the answers

    What type of wave is generated when an earthquake causes vertical movement of the seafloor?

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

    What is the main reason tsunamis are difficult to detect in the open ocean?

    <p>Long wavelengths and small crest-to-trough height</p> Signup and view all the answers

    What causes seiches, earthquake-induced waves in enclosed bodies of water?

    <p>Long-period seismic waves resonating with water oscillations</p> Signup and view all the answers

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