Crossword Puzzle

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Across
  1. 3. one plate moves under another
  2. 5. magma
  3. 6. mountain range
  4. 7. plate
  5. 8. deepest part of the ocean
Down
  1. 1. shaking of the surface of the Earth
  2. 2. harbor wave
  3. 4. collision of lithospheric plates