Weather terms

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Across
  1. 3. front boundary where warm air replaces colder air
  2. 4. most abundant gas in Earth's atmosphere
  3. 5. an instrument that shows wind direction
  4. 7. rain rain that freezes on contact with cold surfaces
  5. 8. instrument used to measure temperature
  6. 9. storm with thunder and lightning
  7. 11. hard balls of ice that fall from harsh thunderstorms
  8. 13. any form of water that falls from clouds
  9. 18. fluffy, white, low level cloud
  10. 19. line on a weather map connecting equal air pressure
  11. 21. the process where water vapor becomes liquid
  12. 23. the process of liquid changing to a vapor
  13. 24. front boundary where cold air replaces warmer air
  14. 25. point temperature at which air becomes saturated
  15. 27. thin, whispy cloud
  16. 29. severe snowstorm with strong winds and low visibility
  17. 35. a device used to measure wind speed
  18. 36. thick, dark cloud that brings rain or snow
Down
  1. 1. an instrument that measures air pressure
  2. 2. liquid precipitation formed from cloud droplets
  3. 6. an instrument that measures moisture in the air
  4. 10. tropical cyclone with very strong winds
  5. 12. bright electrical discharge in a storm
  6. 14. gas people need to breathe
  7. 15. tall,large cloud that produces thunder and lightning
  8. 16. overflow of water onto normally dry land
  9. 17. violent, rotating column of air touching the ground
  10. 20. low gray, sheet like cloud
  11. 22. frozen precipitation made of ice crystals
  12. 26. movement of air from high to low pressure
  13. 28. small pellets of ice that fall from storms
  14. 30. gauge a tool that measures how much rain has fallen
  15. 31. front boundary between two air masses that is not moving a lot
  16. 32. humidity the amount of water vapor in the air compared to how much it can hold
  17. 33. low lying cloud that reduces visibility.
  18. 34. prolonged period with no water