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Plate Boundaries

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  • What is the likely result of an ocean plate moving below the continental crust?
    A volcano
  • Is ocean crust more or less dense than continental crust?
    Less Dense
  • What causes the hotter magma to rise
    Convection Currents
  • What is the crustal feature formed when two oceanic plate boundaries meet?
    volcanic island arc
  • List 2 natural disasters caused by plate tectonics.
    earthquake, volcanic eruption, tsunami, landslides
  • True or False: The Ring of Fire (or the Duck Head of Fire) is one of the most geologically active areas on earth?
    True
  • Layer of rock that forms the continents.
    Continental Crust
  • What is a subduction zone?
    When one plate goes underneath another plate
  • What is the only plate boundary that does not involve magma?
    Transform boundary
  • What is the asthenosphere?
    The upper mantle
  • What geological feature does a transform boundary create?
    Earthquake
  • When 2 continental plates converge, what geographical feature is created?
    Mountains
  • What geographical feature do divergent boundaries create?
    Rift Valleys OR Mid-Ocean Ridge (either answer acceptable)
  • What type of plate boundary causes the plates to grind back and forth against each other?
    Transform
  • What is the Lithosphere?
    Earth's outer crust; where the solid upper mantle meets the crust
  • The San Andreas Fault is an example of which boundary?
    transform boundary
  • What type of plate boundary moves toward each other?
    Convergent
  • What type of boundary causes the sea floor to spread?
    Divergent Boundaries
  • What causes plates to move?
    Convection currents
  • What is plate tectonic theory?
    Earth’s crust is divided into several plates that glide over the earth’s mantle
  • What is a long chain of volcanos that surround the pacific ocean?
    The Ring of Fire
  • What is a subduction zone?
    When one plate goes below another plate
  • What type of plate boundary separates from each other?
    Divergent
  • Are convergent boundaries with ocean/ocean plates a subduction zone?
    Yes
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