plate tectonics

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Across
  1. 2. the scientist who discovered plate tectonics
  2. 4. boundary in which two plates slide past each other
  3. 5. the uppermost layer of the oceanic portion of the tectonic plates.
  4. 8. boundary in which two plates slide into each other
  5. 9. the upper mantle
Down
  1. 1. oceanic plate slides under the continental.
  2. 2. made up of semi-plastic rock
  3. 3. the relatively thick part of the earth's crust that forms the large landmasses.
  4. 6. the rigid outer part of the earth, consisting of the crust and upper mantle.
  5. 7. boundary in which two plates slide apart from each other