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Relative humidity is generally expressed in what form?

Answer and explanation

Correct answer: Percentage

Correct answer: B, percentage. Relative humidity compares the actual amount of water vapour in air with the maximum amount the air can hold at the same temperature. This comparison is conventionally multiplied by 100 and written as a percentage. A reading of 100% indicates saturation, while a lower value indicates that the air is holding less moisture than its temperature-based capacity. B is correct because percentage expresses this comparison clearly. A and C are units of length, so they cannot express humidity. D may be used for angles or temperature in some contexts, but it is not the usual unit for relative humidity. Do not confuse relative humidity with the actual mass of water vapour, which may be measured differently. Memory cue: relative humidity is a comparison, so write it as a percent.

Related tags

Relative HumidityPercentageMoistureAtmospheric MeasurementHumidityEvaporationAnd CondensationHumidity Evaporation And CondensationWater In The AtmosphereGeography

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