Weather

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Across
  1. 1. Used to measure pressure at the Earth's Surface
  2. 3. Local storm produced by a cumulonimbus cloud
  3. 4. Turbulence caused as wind blows across the Earth's surface
  4. 5. Cloud made up entirely of ice crystals
  5. 10. Heat released by a gas to change it to a liquid
  6. 14. Temperature air must be cooled to have 100% humidity
  7. 15. Cloud associated with thunderstorms
  8. 17. Boundary between the troposphere & stratosphere
  9. 19. Precipitation that falls from a cloud but does not reach the ground
Down
  1. 2. Lift caused by mountains
  2. 4. Concentrated downdraft from a thunderstorm
  3. 6. Vertical transfer of energy, can cause thunderstorms
  4. 7. Dividing line between two different airmasses
  5. 8. Fog that forms on clear nights with light winds
  6. 9. Horizontal movement of air cause by pressure differences
  7. 11. Thunderstorm with a rotating mesocyclone
  8. 12. Rotating column of air below a thunderstorm that reaches the ground
  9. 13. Electrical discharge in the air associated with thunderstorms
  10. 16. Turbulence generated behind an aircraft that is producing lift
  11. 18. Makes up 21% of the Earth's atmosphere