Earth Science Midterms: Earthquake Hazards and Fault Types
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Questions and Answers

What causes the shaking of the ground in earthquakes?

  • Movement of tectonic plates
  • Volcanic activity
  • Man-made disturbances
  • All of the above (correct)
  • Which type of fault results from horizontal tension stresses in brittle rocks?

  • Thrust Fault
  • Reverse Fault
  • Strike-Slip Fault
  • Normal Fault (correct)
  • At which plate boundaries do normal faults typically occur?

  • Convergent plate boundaries
  • Divergent plate boundaries (correct)
  • Subduction plate boundaries
  • Transform plate boundaries
  • Which type of fault results from horizontal compressional stresses in brittle rocks?

    <p>Reverse Fault</p> Signup and view all the answers

    What is a special case of a reverse fault with a dip less than 45°?

    <p>Thrust Fault</p> Signup and view all the answers

    Which type of fault can result in older rock layers overlying lower rock layers?

    <p>Thrust Fault</p> Signup and view all the answers

    What is the defining characteristic of Blind Faults?

    <p>Ductile function of rocks above the fault</p> Signup and view all the answers

    What type of motion occurs in Strike Slip Faults?

    <p>Horizontal motion</p> Signup and view all the answers

    What is the main characteristic of a Left-Lateral Strike Slip Fault?

    <p>Block on the other side moves to the left</p> Signup and view all the answers

    Where is the Epicenter of an earthquake located?

    <p>At the surface directly above the Focus</p> Signup and view all the answers

    What triggers earthquakes according to the text?

    <p>Movement along faults</p> Signup and view all the answers

    What is the purpose of understanding the effects of an earthquake?

    <p>To reduce the impacts on vulnerable populations</p> Signup and view all the answers

    What is a defining feature of Plates according to the text?

    <p>Constantly moving</p> Signup and view all the answers

    What type of fault has displacement measured along the dip direction?

    <p>Normal fault</p> Signup and view all the answers

    What type of fault results in hanging wall blocks above the fault plate?

    <p>Normal fault</p> Signup and view all the answers

    What causes aftershocks following a main earthquake?

    <p>Re-adjustment of stress along fault system</p> Signup and view all the answers

    Which seismic waves are responsible for causing ground shaking during an earthquake?

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

    What is an important outcome of studying multi-hazard risk frameworks?

    <p>Enhanced preparedness and mitigation strategies</p> Signup and view all the answers

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