NAME: ________________________

Plate Tectonics: Section 4 / Key Concepts & Terms Test

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3 Written Questions

3 Multiple Choice Questions

  1. deep underwater canyons
  2. In a process taking tens of millions of years, part of the ocean floor sinks back into the mantle at deep-ocean trenches.
  3. Several types of evidence supported the theory of sea floor spreading: eruptions of molten material, magnetic stripes in the rock of the ocean floor, and the ages of the rocks themselves.

2 True/False Questions

  1. sonara device that bounces sound waves off underwater objects and then records the echoes of these sound waves.


  2. mid-ocean ridgedeep underwater canyons


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