Divergent Plate Boundaries
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Questions and Answers

What process occurs at mid-ocean ridges?

  • Oceanic plates sink into the mantle.
  • Magma rises to the surface and forms new crust. (correct)
  • Continental plates collide and create mountain ranges.
  • Sediments accumulate on the ocean floor.
  • What role does water play in the formation of new crust at mid-ocean ridges?

  • It cools the magma, allowing it to solidify into rock. (correct)
  • It vaporizes and creates pressure to drive magma upwards.
  • It mixes with magma to form new types of minerals.
  • It erodes existing crust to make room for new formations.
  • In the context of the E. African Rift, what ultimately results from rainwater filling the rift?

  • Development of an ocean as the rift expands. (correct)
  • Formation of a new continent.
  • Creation of large glaciers in the region.
  • Erosion of surrounding mountains.
  • What evidence indicates the direction of plate movement in divergent boundaries?

    <p>Arrows depicted on maps or diagrams. (C)</p> Signup and view all the answers

    Which statement correctly describes the formation of new crust at mid-ocean ridges?

    <p>Magma rises, cools, and solidifies, adding to the oceanic crust. (A)</p> Signup and view all the answers

    Flashcards

    Mid-Ocean Ridges

    Underwater mountain ranges where new crust forms as magma rises and cools.

    Plate Divergence

    The process by which two tectonic plates move apart from each other.

    E. African Rift

    A continental rift where rain fills a valley, eventually forming an ocean.

    Magma Cooling

    The process where rising magma cools and solidifies to form new crust.

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    Continental Plates

    Large sections of Earth's crust that diverge to create rifts and oceans.

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    Study Notes

    Divergent Plate Boundaries

    • Oceanic-Oceanic: Magma rises into a crack, cools, and forms mid-ocean ridges.
    • Continental-Continental: Rain falls into the rift, filling it and creating an ocean. This rock rises to form the bottom. An example is the East African Rift.

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    Description

    Explore the fascinating world of divergent plate boundaries in this quiz. Learn about the processes that shape oceanic and continental rifts, including mid-ocean ridges and the East African Rift. Test your knowledge and discover the geology behind these dynamic formations.

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