Weather maps

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Across
  1. 2. causes an increase in temperatures
  2. 4. causes a drop in temperatures
  3. 5. a weather system that causes air to sink and creates fair and clear skies and sunshine
  4. 8. create cool air masses
  5. 10. a weather system causes air to rise and creates clouds and rain
  6. 11. a boundary between air masses
  7. 13. an air mass that forms over water
Down
  1. 1. the pressure that a column of air exerts on the air or surface below it
  2. 3. create very cold air masses
  3. 6. an air mass boundary that is not moving
  4. 7. an air mass that forms over land
  5. 9. create warm air masses
  6. 12. a large body of air in the lower atmosphere with specific temperature and humidity