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Earth's Systems Quiz
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Earth's Systems Quiz

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@CommodiousAwe

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Questions and Answers

What is the composition of the Earth's crust?

  • Primarily consisting of organic compounds
  • Made almost entirely of light elements (correct)
  • Comprised mainly of water and ice
  • Composed mainly of heavy metals

    • Which part of the Earth's system is described as a thin layer where life exists?

  • Geosphere
  • Hydrosphere
  • Atmosphere
  • Biosphere (correct)

    • What causes alterations in seismic waves as they travel through the Earth's interior?

  • Solar radiation fluctuations
  • The nature of the material through which the waves travel (correct)
  • Changes in atmospheric pressure
  • Magnetic field variations

    • Which layer of the Earth is described as a mixture of gases that makes up the air we breathe?

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

    What are seismic waves used for by scientists to learn about the Earth's interior?

    <p>To measure changes in the speed and direction of waves penetrating the interior</p> Signup and view all the answers

    What is the approximate thickness of the Earth's crust beneath the continents?

    <p>20-70 km</p> Signup and view all the answers

    Which part of the Earth's system is described as containing rock, soils, and sediments in the surface and interior of the Earth?

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

    What percentage of Earth's mass does the crust make up?

    <p>&lt; 1%</p> Signup and view all the answers

    What is the main cause of alterations in seismic waves as they travel through the Earth's interior?

    <p>Movement of tectonic plates</p> Signup and view all the answers

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