Earthguide Online Classroom

Questions for thought

  1. Are plates capped with continental or oceanic crust? Consider the North American Plate.
  2. Are tectonic plates pieces of crust or lithosphere? What is the best answer?
  3. Which of these "compositional" layers make up a plate - crust, mantle, and core?
  4. As the Atlantic Ocean opens, what happens to the size of the North American Plate?
Last edited: January 7, 2010 - M. Yasuda.

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