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What is the process of water vapour cooling and changing into water droplets called?

Answer and explanation

Correct answer: Condensation

Answer: B, condensation. Water vapour is water in a gaseous state. When moist air cools sufficiently, it cannot retain the same amount of vapour. The vapour then changes into very small liquid water droplets; this change from gas to liquid is called condensation. These droplets may collect on a cool surface as dew or remain suspended in the atmosphere as part of clouds. A, evaporation, is the reverse change in which liquid water becomes vapour, usually because of heating. C, melting, means a solid such as ice changing into liquid water. D, sublimation, means a solid changing directly into a gas without first becoming liquid. Therefore, only B describes cooled water vapour becoming droplets. Memory cue: cooling vapour condenses; heating liquid evaporates.

Related tags

GeographyCondensationWater VapourWater In AtmosphereHumidityEvaporationAnd CondensationHumidity Evaporation And CondensationWater In The AtmosphereClass 12 Mcq

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