pressure

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Across
  1. 4. force per unit area
  2. 5. upward force exerted by a fluid
  3. 7. states of matter that can flow
  4. 9. is usd to measure liquid pressure
Down
  1. 1. underwater vessel that explores deep seas
  2. 2. Main body of a submarine
  3. 3. is used to measure air pressure
  4. 4. Scientist who studied pressure
  5. 6. organs used by fish to breathe
  6. 8. a push/pull that can cause motion