techtonic plates

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Across
  1. 3. where the plates seperate
  2. 4. a valley
  3. 6. a plate going under another plate
  4. 7. when two plates grind against each other
  5. 8. land masses that are moved by magma flow
Down
  1. 1. magma flow
  2. 2. the larges layer of the earth
  3. 5. two plates coming together