HMH Science Dimensions: Plate Tectonics Quiz
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Questions and Answers

What is the outer layer of Earth, which is divided into distinct tectonic plates, called?

  • Lithosphere (correct)
  • Crust
  • Mantle
  • Asthenosphere
  • What is the South American plate composed of?

  • Both continental and oceanic crust (correct)
  • Only oceanic crust
  • Sedimentary rock
  • Only continental crust
  • What transitions within the continental margin, including the continental shelf and nearby sediment?

  • Oceanic crust
  • Asthenosphere
  • Mantle
  • Continental crust (correct)
  • What is the non-obvious transition called between the continental and oceanic crust?

    <p>Continent-ocean boundary</p> Signup and view all the answers

    What does the composition and structure of the crust reflect?

    <p>Processes that shape plates</p> Signup and view all the answers

    What do tectonic plates refer to?

    <p>Sections of the Earth's lithosphere</p> Signup and view all the answers

    What does the San Andreas Fault represent?

    <p>A boundary between the Pacific plate and the North American plate</p> Signup and view all the answers

    What do velocity vectors represent in the context of lithosphere motion?

    <p>Speed and direction of lithosphere movement</p> Signup and view all the answers

    How do scientists determine the precise location of an earthquake's epicenter?

    <p>By measuring the shaking caused by the earthquake</p> Signup and view all the answers

    What period of time is considered when analyzing earthquakes and active volcanoes on the maps?

    <p>40 years for earthquakes, 10,000 years for volcanoes</p> Signup and view all the answers

    What are faults in relation to rock movement?

    <p>Breaks in rock along which it can slide</p> Signup and view all the answers

    Which part of Earth's lithosphere is moving northwest relative to the other side of the San Andreas Fault?

    <p>The western side</p> Signup and view all the answers

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