Seafloor Features
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Questions and Answers

What is an abyssal plain?

  • A steep incline of the ocean floor
  • A boundary between continental crust and oceanic crust
  • An isolated volcanic mount
  • A large, flat, almost level area of the deep-ocean basin (correct)

    • What defines a continental margin?

    A boundary between continental crust and oceanic crust

    What is a continental slope?

    A steep incline of the ocean floor leading down from the edge of the continental shelf

    What are guyots?

    <p>Flattened seamounts caused by erosion from waves and currents</p> Signup and view all the answers

    What are mid-ocean ridges?

    <p>Long chains of mountains on the ocean floors</p> Signup and view all the answers

    What are rift valleys?

    <p>Rifts located at the center of the ridges where magma flows in to fill the spaces</p> Signup and view all the answers

    What are submarine canyons?

    <p>Eroded by turbidity currents cutting into the rocks of continental shelves and slopes</p> Signup and view all the answers

    What are sea mounts?

    <p>Isolated volcanic mount</p> Signup and view all the answers

    What are trenches?

    <p>Deep ditches used in battle for cover against enemy gunfire</p> Signup and view all the answers

    What is a continental shelf?

    <p>A gently sloping, shallow area of the ocean floor that extends outward from the edge of a continent</p> Signup and view all the answers

    Study Notes

    Seafloor Features

    • Abyssal Plain: Characterized as extensive, flat regions in deep-ocean basins, forming a significant part of the ocean floor.
    • Continental Margin: Serves as the demarcation line where continental crust transitions into oceanic crust, influencing geology and marine ecosystems.
    • Continental Slope: Represents a steep descent from the continental shelf to the deep ocean floor, impacting sedimentary processes and marine life.
    • Guyots: Recognized as seamounts that have been flattened due to wave and current erosion, indicative of geological processes over time.
    • Mid-Ocean Ridges: Feature extensive mountain ranges under the ocean, formed by tectonic activities and playing a vital role in seafloor spreading.
    • Rift Valleys: Found at mid-ocean ridges, these are zones where magma rises to fill the space created by tectonic divergence, contributing to ocean basin formation.
    • Submarine Canyons: Formed by turbidity currents that erode continental shelves and slopes, these canyons are key to understanding underwater sediment transport.
    • Sea Mounts: Defined as isolated underwater volcanoes that rise from the ocean floor, often hosting unique marine biodiversity.
    • Trenches: Deep-sea depressions formed by tectonic subduction, these features are among the deepest parts of the ocean and are critical for oceanographic studies.
    • Continental Shelf: A broad, gently sloping area adjacent to the continent, rich in marine resources and vital for fishing industries.

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    Description

    Explore the various features of the ocean floor in this quiz. From abyssal plains to mid-ocean ridges, understand the geological processes shaping our oceans. Test your knowledge on the continental shelf, seamounts, and submarine canyons.

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