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What does absolute humidity indicate?

Answer and explanation

Correct answer: Actual amount of water vapour in air

Answer: A, the actual amount of water vapour in air. Absolute humidity describes how much water vapour is actually present in a given volume of air. It is commonly expressed as a mass of water vapour per unit volume of air, so it measures actual moisture rather than a comparison with the possible maximum. B, total rainfall amount, measures precipitation collected over a period and does not tell the water vapour currently present in air. C, wind speed describes how fast air moves. D, temperature difference compares temperatures and is unrelated to the definition of absolute humidity. Relative humidity is different: it compares actual vapour with the maximum capacity at a particular temperature and is expressed as a percentage. Thus the key word in this question is actual amount. Memory cue: absolute means the measured amount present; relative means a comparison with capacity.

Related tags

GeographyAbsolute HumidityWater VapourHumidityEvaporationAnd CondensationHumidity Evaporation And CondensationWater In The AtmosphereClass 12 Mcq

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