Journey to the Center
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Questions and Answers

What is the average thickness of the Earth's crust?

  • Varies from oceanic to continental crust (correct)
  • 100 kilometers
  • 10 kilometers
  • 1000 kilometers

    • What do seismic discontinuities indicate?

  • Changes in the composition or physical state of materials (correct)
  • The presence of water in the Earth's interior
  • The movement of tectonic plates
  • Changes in the temperature of the Earth's layers

    • How is the internal structure of the Earth characterized?

  • Layered (spherical shells) (correct)
  • Homogeneous throughout
  • Solid and continuous
  • Chaotic and unstructured

    • Which type of wave was used to discover seismic discontinuities?

    <p>Compression waves (P-wave) (B)</p> Signup and view all the answers

    What do major discontinuities in the Earth's interior include?

    <p>Moho, Gutenberg &amp; Lehman (C)</p> Signup and view all the answers

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