There are two common ways of expressing the amount of water vapor in air:
A) dew point and relative humidity.
B) dew point and absolute humidity.
C) absolute humidity and relative humidity.
D) none of the above

Question

Quizplus · Accepted Answer

Absolute humidity is the actual amount of water vapor present in the air, expressed as the mass of water vapor per unit volume of air (e.g. grams of water vapor per cubic meter of air). Relative humidity is the ratio of the actual amount of water vapor present in the air to the maximum amount of water vapor that the air could hold at a given temperature, expressed as a percentage. Dew point is the temperature to which air must be cooled in order for saturation to occur and dew or frost to form, and it is a function of both the absolute humidity and the temperature. Therefore, the best choice for expressing the amount of water vapor in air is a combination of absolute humidity and relative humidity.

There Are Two Common Ways of Expressing the Amount of Water