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What is the importance of dew point temperature in cloud formation?

Answer and explanation

Correct answer: It indicates the temperature at which air becomes saturated and condensation can begin

Correct answer: A. Dew-point temperature is the temperature to which air must be cooled, at its existing moisture content and pressure, for it to become saturated. If cooling continues or suitable condensation nuclei are present, water vapour can condense into tiny droplets or deposit as ice. In rising air, reaching the dew point helps mark the level where cloud formation may begin; this is related to the cloud base, though actual cloud structure also depends on atmospheric mixing and other conditions. B is wrong because dew point is not a wind-direction measurement. C is wrong because it does not erase or measure surface elevation. D is wrong because reaching the dew point supports condensation and can precede cloud or precipitation formation. Memory cue: “Dew point is the saturation temperature, not the air’s current temperature in every case.”

Related tags

Dew PointAir SaturationCondensationCloud BaseForms Of Condensation: DewFrostFogAnd MistForms Of Condensation Dew Frost Fog And MistWater In The AtmosphereGeography

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