Subject Category > General Knowledge

Q. Clouds usually form when

A) evapouration has warmed the surrounding air

B) air temperature reaches the dew point

C) condensation nuclei have been removed from the air

D) relative humidity is 0%

air temperature reaches the dew point

Additional Information > Exam point of View

Clouds usually form when warm, moist air rises, expands, and cools, leading to condensation of water vapor into tiny water droplets or ice crystals.

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