Weather puzzle

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Across
  1. 2. someone who studies weather
  2. 4. boundary between two air masses
  3. 6. water flowing off a mountain
  4. 7. daily or hourly conditions
  5. 8. big star
  6. 9. moving air
  7. 11. fraction of the sky coverd by clouds
Down
  1. 1. sad weather
  2. 3. happy weather
  3. 5. moves across small distances across earths surface
  4. 10. a collection of tiny water droplets