A humidity measure that remains constant as temperature and pressure change,and which is expressed as a mass of water vapor per mass (g/kg)of air,is
A)relative humidity.
B)the dew-point.
C)vapor pressure.
D)specific humidity.

Question

Quizplus · Accepted Answer

Specific humidity is a measure of the actual amount of water vapor present in the air, independent of temperature and pressure. It is expressed as a mass of water vapor per mass of air (usually in grams of water vapor per kilogram of air). Relative humidity, dew-point, and vapor pressure all vary with changes in temperature and pressure.

A Humidity Measure That Remains Constant as Temperature and Pressure