5_Ocean morphology - One of the important differences...

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One of the important differences between the basins of the Atlantic and the Pacific Oceans is in the relative abundance of deep sea trenches. 1. Explain the significance of why the edges of the Atlantic Ocean have so few trenches, while the Pacific has trenches. 2. How does this relate to the history of ocean crust formation/destruction over the last 250 million years. 3. Explain how this difference provides the mechanism Wegner was missing when he proposed Continental Drift.
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Echo-sounding or Sonar
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Which sea floor mapping method produces the greatest coverage of seafloor features: A. Lead line B. SONAR (Most Details) C. Satellite Radar Altimetry (Broadest Range D. Satellite color imagery E. SCUBA
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Main ocean floor provinces include: 1. Continental shelf, slope & rise 2. Abyssal plains & hills 3. Mid-ocean ridges 4. Trenches Continental Shelf Continental Slope Continental Rise Mantle
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Continental Shelves
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Active : continental shelf is narrower, continental slope goes deep into trenches.
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