Plate Tectonics and Transform Boundaries
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Questions and Answers

What is a characteristic of transform plate boundaries?

  • They result in the destruction of crust.
  • They are locations where plates slide past one another. (correct)
  • They form new oceanic crust.
  • They create volcanic activity.
  • Which of the following is NOT a long transform boundary associated with the Pacific Plate?

  • East African Rift (correct)
  • Alpine Fault
  • Queen Charlotte
  • San Andreas
  • How frequently do major ruptures occur along the Alpine Fault?

  • Every 1000 years
  • Every 100-350 years (correct)
  • Every 50 years
  • Every 500 years
  • What is the primary source of water for San Francisco related to the San Andreas Fault?

    <p>Crystal Springs Reservoir</p> Signup and view all the answers

    What occurs at the intersection of three tectonic plates?

    <p>A triple junction</p> Signup and view all the answers

    What indicates sliding movement at spreading ridges?

    <p>Earthquake activity</p> Signup and view all the answers

    What type of volcanic activity is not associated with plate boundaries?

    <p>Hotspot volcanoes</p> Signup and view all the answers

    Volcanic ages of seamounts generally do what as they move further from Hawaii?

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

    Study Notes

    Plate Tectonics

    • Plate tectonics is a scientific revolution
    • Three types of tectonic plate boundaries exist, based on relative motion
    • Transform plate boundaries are special locations in the tectonic plate mosaic

    Transform Plate Boundaries

    • Transform plate boundaries are where plates slide horizontally past each other
    • The Pacific plate has three major transform boundaries: Queen Charlotte, San Andreas, and Alpine fault.
    • The San Andreas Fault in California is a prime example
    • The San Andreas Fault is a source of water for San Francisco.

    Spreading Ridges and Fracture Zones

    • Spreading ridges are broken up by fracture zones.
    • Fracture zones are transform faults that cut across the oceanic ridge.
    • Earthquake activity at ridges indicates sliding movement
    • Transform faults occur between axes of mid-ocean ridge segments

    Transform Faults

    • Transform faults are contacts between plates that slide horizontally
    • They commonly connect two mid-ocean ridges.
    • Transform boundaries often occur along mid-ocean ridges, separating two tectonic plates.

    Triple Junctions

    • The intersection of three tectonic plates forms a triple junction
    • There are different types of triple junctions, such as ridge-ridge-ridge.

    Hotspot Volcanoes

    • Hotspot volcanoes are not plate boundary volcanoes
    • A chain of seamounts is formed by a hotspot
    • Magma upwelling produces a hotspot.
    • As the plate moves, the volcano moves away from the hotspot, and is eventually eroded.

    Volcanic Ages of Seamounts

    • Volcanic ages of seamounts increase away from the Hawaiian Islands.
    • As the Pacific plate moves over the Hawaiian hotspot, volcanoes are created at different points in time and at varying distances from the hotspot.

    Iceland

    • Iceland is one of the most active volcanic regions.
    • Specific features indicate the focus of the mantle plume.
    • Specific zones and periods of activity are important indicators of Iceland's volcanic history and activity.

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    Description

    Explore the fascinating world of plate tectonics, focusing on transform plate boundaries. Learn about their unique characteristics, key examples like the San Andreas Fault, and the relationship between spreading ridges and fracture zones. This quiz will deepen your understanding of tectonic movements and their impact on our planet.

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