| 11. | Under some atmospheric conditions, forming and descending snow crystals may encounter and pass through atmospheric supercooled cloud droplets.
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| 12. | Under persistent condensation or deposition, cloud droplets or snowflakes form, which precipitate when they reach a critical mass.
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| 13. | For any given meteorological conditions, an increase in CCN leads to an increase in the number of cloud droplets.
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| 14. | The process is called " riming " when super-cooled cloud droplets attach to ice crystals in the formation of graupel.
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| 15. | Condensation occurs almost exclusively by equilibrium processes, and so it enriches cloud droplets somewhat less than evaporation depletes the vapor.
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| 16. | Water coats particles in an aerosols, making them " activated ", usually in the context of forming a cloud droplet.
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| 17. | If enough water vapor condenses into cloud droplets, these droplets may become large enough to fall to the ground as precipitation.
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| 18. | Drizzle occurs when the humidity of fog attains 100 % and the minute cloud droplets begin to coalesce into larger droplets.
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| 19. | As for storms, as hot air near the ground rises into cooler regions, any moisture in the air condenses into cloud droplets.
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| 20. | Ice crystals fall through a cloud of super-cooled droplets minute cloud droplets that have fallen below freezing temperature but have not frozen.
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