Plate Tectonics

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Across
  1. 3. The process by which new oceanic crust forms along a mid-ocean ridge and older oceanic crust moves away from the ridge until it reaches a trench where it goes back towards the mantle and melts.
  2. 4. The boundary where two plates slide past each other
  3. 6. The rigid outermost rock layer made up of the crust and the solid, uppermost mantle
  4. 7. The circulation of material caused by differences in temperature and density
  5. 9. The process that occurs when a denser plate sinks below a less dense plate
  6. 10. The boundary where two plates are moving away from each other or separating
Down
  1. 1. The name given to a supercontinent that began to break apart approximately 200 million years ago
  2. 2. he movement of Earth’s continents over time
  3. 5. The mountain ranges in the middle of the oceans
  4. 7. The boundary where two plates are colliding or moving toward each other
  5. 8. The partially melted portion of the mantle below the lithosphere