Humidity & Air Pressure Review

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Across
  1. 3. as altitude increases, air pressure __________ in the atmosphere
  2. 5. a measure the amount of water vapor in a air campared to the maximum mass of water vapor the air could possibly hold
  3. 8. lines on a weather map that show equal areas of air pressure
  4. 9. _____ pressure systems create more precipitation because air rises
  5. 12. the amount of water vapor in the atmosphere at a given location on Earth's surface
  6. 14. when air cannot hold any more water vapor at a given temperature
  7. 15. in low-pressure systems, air ______ in the atmosphere
  8. 16. pressure force exerted on a surface by the air above it as gravity pulls it to Earth
  9. 17. the closer isobars are to each other the _______
  10. 18. ______ pressure systems create fair and calm weather because air is sinking
  11. 20. how much water air can hold
  12. 21. relative humidity is expressed as a _________
Down
  1. 1. the amount of heat absorbed or released as water changes state
  2. 2. a measure of the mass of water in a volume of air
  3. 4. in high-pressure systems, air ______ in the atmosphere
  4. 6. the temperature to which air must be cooled at constant pressure to reach saturation
  5. 7. instrument scientists use to measure air pressure
  6. 10. instrument used to measure relative humidity
  7. 11. ______ ____ holds more water
  8. 13. ______ ____ holds less water
  9. 19. Winds blow from ____ to ____ pressure systems