Alfred Wegener and Continental Drift Theory
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Alfred Wegener and Continental Drift Theory

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@BetterKnownAmaranth

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Questions and Answers

What was the name of the supercontinent proposed by Alfred Wegener?

  • Gondwana
  • Laurasia
  • Rodinia
  • Pangaea (correct)
  • What evidence did Alfred Wegener use to support his hypothesis of continental drift?

  • Dissimilar climates and coastlines
  • Matching coastlines and mountain chains (correct)
  • Unmatched rock types and glacial evidence
  • Different plant and animal fossils
  • Who created the first scientific map of the entire ocean floor?

  • Alfred Wegener
  • Sonar technology
  • Harry Hess
  • Marie Tharp (correct)
  • What technology was used in the early 1900s to calculate the distance to the ocean floor?

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

    Why was Alfred Wegener's hypothesis of continental drift initially rejected?

    <p>&quot;He could not explain how continents drifted apart&quot;</p> Signup and view all the answers

    What did Harry Hess use in 1960 to explain Sea-Floor Spreading?

    <p>SONAR images</p> Signup and view all the answers

    What is the deepest trench on Earth located within?

    <p>Deep-Ocean Trenches</p> Signup and view all the answers

    What is the Challenger Deep?

    <p>The deepest place on Earth</p> Signup and view all the answers

    What process causes older portions of the ocean floor to subduct into the mantle?

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

    What evidence supports the theory of sea-floor spreading?

    <p>Alternating magnetic stripes in ocean-floor rock</p> Signup and view all the answers

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