weather crossword

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Across
  1. 1. violently rotating column of air touching the ground usually attached to the base of a thunderstorm
  2. 3. tool that measures the wind speed
  3. 5. large cloud that produces harsh weather
  4. 12. humidity, the amount of water in the air in relation to the maximum amount of water vapor
  5. 13. a storm with thunder and lightning and typically also heavy rain or hail
  6. 14. tropical storm with winds that have reached a constant speed of 74 miles per hour or more.
  7. 15. cloud that produces steady rain or snow
  8. 16. a line on a map connecting points having the same atmospheric pressure at a given time or on average over a given period
  9. 20. water vapor changes directly to ice crystals
  10. 22. tool that measures the air pressure
  11. 26. any form of condensed water vapor that begins in the atmosphere and falls to the ground
  12. 27. gauge, tool that measures the amount of rain
  13. 28. a period when there is no precipitation for a long time
  14. 30. gas that makes up 78% of the air
  15. 31. water overflows or soaks land that is normally dry
  16. 32. rain, rain that freezes on impact
  17. 33. when negative charges at the bottom of a cloud are attracted to positive charges on the ground
Down
  1. 1. tool that measures the air temperature
  2. 2. vane, tool that measures the air direction
  3. 4. boundary when a cooler mass of air replaces warmer mass of air
  4. 6. one of the highest clouds made of only ice crystals
  5. 7. when a cold front or warm front stops moving
  6. 8. cotton ball shaped cloud
  7. 9. a layer of air that is cooled to dew point temperature
  8. 10. process when water turns into gas
  9. 11. rain falls through a layer of very cold air and freezes before it hits the ground
  10. 17. when water vapor cools into droplets after touching a cool surface
  11. 18. tool that measures the humidity in the air
  12. 19. the temperature when water vapor condenses into droplets
  13. 21. boundary when warmer mass of air replaces a cooler mass of air
  14. 22. severe snowstorm with high winds and low visibility
  15. 23. water drops about 1000 times the size of a cloud droplet
  16. 24. gas that makes up 21% of the air
  17. 25. the movement of air caused by convection currents
  18. 29. large ice pellets from cumulonimbus clouds
  19. 32. stratus cloud formed near the ground