Zoya's crossword

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Across
  1. 3. how many km is the ring of fire
  2. 5. the deepest part of the ocean floor
  3. 6. pacific P______
  4. 8. something that erupts
Down
  1. 1. the centre of the earth
  2. 2. was once believed to be apart of the pacific plate
  3. 4. T______ plate
  4. 7. comes out of a volcano
  5. 9. the top layer of the earth