ocean

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Across
  1. 5. two dence plates collide
  2. 7. plates slide past eahcother
  3. 8. the outer shell of the earth
Down
  1. 1. partly melted rock under the lithosphere
  2. 2. the study of the formation and movement of earths plates
  3. 3. two plates colide at equal force
  4. 4. a plate that moves away from another
  5. 6. moves