Air Pressure and weather

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Across
  1. 3. Another way of saying rain
  2. 5. Warm air ______ as cool air sinks.
  3. 6. _____ pressure is associated with nice weather
  4. 9. A type of cloud associated with stormy weather
  5. 10. A boundary between a mass of warm air and retreating cold air.
  6. 11. A cold air mass replaces a warm air mass
Down
  1. 1. An instrument used to measure wind speed
  2. 2. An instrument used to measures air pressure
  3. 4. The force of air on a surface
  4. 6. Used to measure the humidity in the air
  5. 7. Used to measure the surrounding air temperature
  6. 8. ________ pressure is associated with lousy weather