Understanding Earthquakes and Tectonic Plates
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Questions and Answers

What is the location on Earth's surface where a fault can be observed?

  • Faulty area
  • Fault zone
  • Fault line (correct)
  • Fault region

    • Why are geologists unable to predict when earthquakes will occur?

  • The consistent activities along fault lines
  • The stable nature of Earth's crust
  • The unpredictable movement of tectonic plates (correct)
  • The clear signs before an earthquake

    • What causes earthquakes to happen?

  • Lack of stress around fault lines
  • Energy release at fault lines (correct)
  • Tension reduction between tectonic plates
  • Sudden push of tectonic plates

    • Which machine is used by scientists to measure earthquakes?

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

    What is the name for the largest earthquake in a series of quakes?

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

    What role do foreshocks play in relation to the mainshock?

    <p>They occur prior to the mainshock</p> Signup and view all the answers

    What happens when two tectonic plates suddenly slip along a fault?

    <p>An earthquake occurs</p> Signup and view all the answers

    What distinguishes foreshocks from mainshocks and aftershocks?

    <p>They cannot be labeled until a larger quake occurs.</p> Signup and view all the answers

    Why is it not possible to predict an earthquake by measuring seismic activity from a foreshock?

    <p>It is unknown if a foreshock will be followed by another quake.</p> Signup and view all the answers

    What defines an aftershock?

    <p>It occurs following the mainshock in the same region.</p> Signup and view all the answers

    Why might a quake initially classified as the mainshock be later labeled as a foreshock?

    <p>Its magnitude was smaller than another subsequent quake.</p> Signup and view all the answers

    What do aftershocks result from?

    <p>The build-up of stress energy along a fault line.</p> Signup and view all the answers

    How long can aftershocks last after a mainshock?

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

    What determines the frequency and duration of aftershocks?

    <p>The magnitude of the main earthquake</p> Signup and view all the answers

    'Whenever two tectonic plates slip, what happens?'

    <p>'Energy builds up along a fault line.'</p> Signup and view all the answers

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