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Unit 5 Review

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  • What are the 3 types of tectonic plates movement?
    divergent, convergent, transform
  • When were the tectonic plates actually mapped?
    1950s
  • How do divergent plates move?
    plates move away from each other creating new land
  • When were tectonic plates discovered?
    1872
  • Tectonic plates move about________ per year.
    2.5 centimeters
  • How many layers does the Earth have?
    4
  • Tectonic plates are located in the _________.
    Lithosphere
  • Name two consequences of tectonic plates moving
    continental drift, earthquakes, tsunamis
  • What are the names of the 4 layers of Earth?
    Lithosphere, Asthenosphere, outer core, inner core
  • You can see the Mid-Atlantic Ridge in this country
    Iceland
  • When did tectonic plates happen?
    At the end of the Triassic period.
  • How do convergent plates move?
    One plate goes underneath the other one and is consumed by the mantle
  • How do transforming plates move?
    Plates slide past each other without creating or destroying the lithosphere
  • Describe the Mid-Atlantic Ridge
    The Mid-Atlantic Ridge is where seafloor spreading takes place in the middle of the Atlantic Ocean. They create the tallest mountains.
  • It took _____ million years for continents to look like they do today
    200 million years
  • When all continents were together, it was called
    Pangea
  • Explain how tectonic plates were created
    The asthenosphere (mantle) is beneath the lithosphere and it is very large, hot and rocks are always moving causing the lithosphere to crack.
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