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Why does the amount of water vapour affect weather?

Answer and explanation

Correct answer: Because it is linked with clouds, rainfall and heat balance

Direct answer: C. The amount of water vapour changes several important atmospheric processes. When moist air cools to its dew point, water vapour can condense into droplets and form clouds; further growth of droplets may contribute to precipitation. Water also absorbs and releases latent heat: evaporation takes heat from the surroundings, while condensation releases that stored energy. This affects air temperature, convection, cloud development and weather conditions. A is incorrect because water vapour does not only form rocks; rock formation is not its main weather role. B is incorrect because normal changes in atmospheric water vapour do not change Earth’s overall shape. D is incorrect because water vapour does not stop or block the sea. Memory cue: more vapour means more moisture available for clouds, rain and energy exchange, although vapour alone does not guarantee immediate rain.

Related tags

GeographyWater VapourWeatherHumidityEvaporationAnd CondensationHumidity Evaporation And CondensationWater In The AtmosphereClass 12 Mcq

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