everything sciencey

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Across
  1. 3. where two air masses meet
  2. 6. is part of the water cycle
  3. 7. the rate of change of velocity
  4. 9. force that pulls objects toward each other
  5. 13. air in motion
  6. 14. water vapor cooled
  7. 15. coldest layer
  8. 16. distance an object travel per unit of time
  9. 17. speed in a given direction
  10. 20. huge storms that form in the ocean
Down
  1. 1. plant releases water from leaves
  2. 2. force that opposes motion
  3. 4. UV radiation
  4. 5. transfer of heat through currents
  5. 6. the calm part of the hurricane
  6. 8. basic unit of structure and function
  7. 10. flows back into the ocean
  8. 11. hottest layer
  9. 12. air pressure is the lowest
  10. 18. transfer of heat through touching
  11. 19. there is weather