Clouds

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Across
  1. 3. releasing of water vapor into air by breathing or photosynthesis
  2. 4. top layer of rock through which water flows but does not stay
  3. 9. changing of water from liquid to gas without boiling
  4. 11. where the zone of aeration and zone of saturation meet
  5. 14. rock with holes that allows water to flow through it
  6. 16. rain with lower than normal pH level
  7. 17. changing of water from liquid to gas by boiling
  8. 18. fog that forms as warm air passes over cool air in a mountain valley
  9. 19. dropping chemicals into clouds to encourage raindrop formation
  10. 21. fog that forms as cool air moves over a warm moist surface
  11. 22. water circulation mainly by evaporation and precipitation
  12. 23. wispy, curly clouds
  13. 24. when water vapor cools and turns into liquid water
  14. 27. fluffy, billowy clouds
Down
  1. 1. a place where ground water comes to the surface
  2. 2. lower layer of rock filled with water
  3. 5. clouds that are likely to bring rain
  4. 6. rock that does not let water flow through it
  5. 7. clouds that touch the earth
  6. 8. water droplets stick together to form larger drops
  7. 10. fog that forms as wind moves warm moist air over cooler surface
  8. 12. fog that forms as earth cools at night
  9. 13. 100% relative humidity
  10. 15. ____ nuclei: particles to which water droplets stick when coalescing
  11. 20. rising of warm air
  12. 25. clouds that are stretched out in thin layers or sheets
  13. 26. fog that forms as warm air cools as it is forced up the slope of a mountain