EARTH: AN INTRODUCTION TO PHYSICAL GEOLOGY

Chapter 2: Plate Tectonics: A Scientific Revolution Unfolds

Key Concepts


crustageanim.gifThe following are key concepts that you should be familiar with after reading and studying Chapter 2: Plate Tectonics. To evaluate your understanding of any of the key concepts, select the corresponding Concept Quiz from the Selection Bar and answer the questions provided.


  1. Wegener’s hypothesis of “continental drift” and the breakup of a former supercontinent (Pangaea).

  2. Paleomagnetism and Hess’ hypothesis of “seafloor spreading.”

  3. Supporting evidence for the plate tectonics model – effective confirmation of Wegener and Hess.

  4. Fundamental components of the plate tectonics model.

  5. Components and processes of divergent plate margins.

  6. Components and processes of convergent plate margins.

  7. Components and processes of transform plate margins.

  8. Driving mechanisms for plate tectonics: Mantle convection models.



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