Air masses and pressure

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Across
  1. 3. Line on a weather map that have the same pressure
  2. 5. When it overcomes a warm front, creates thunderstorms
  3. 6. Air pressure drops as elevation______
  4. 9. less dense than cold air
  5. 11. Kind of air pressure associated with stormy weather
  6. 12. Air masses have the same general ________ and humidty
Down
  1. 1. a tool used to measure degrees Farhenheit
  2. 2. boundary separating two air masses
  3. 4. A tool used to measure air pressure
  4. 7. The weather is gorgeous. The air pressure is ____
  5. 8. A front that causes days of rain
  6. 10. A tool used to measure wind speed