How does a psychrometer measure relative humidity?(1 point) Responses It compares wet air and dry air at two different elevations. It compares wet air and dry air at two different elevations. It compares the level of moisture in the air at different times of the day. It compares the level of moisture in the air at different times of the day. It compares the temperature in wet air and dry air. It compares the temperature in wet air and dry air. It compares the temperature to the level of moisture in the air.

Answer 1

A psychrometer measures relative humidity by comparing the temperature of wet air and dry air. It uses two thermometers: one with a dry bulb (measuring air temperature) and one with a wet bulb (measuring the temperature after water has evaporated from a wet cloth). The difference in temperatures between the two bulbs is used to calculate relative humidity, based on the principle that the evaporation of water from the wet bulb cools it down, and the extent of this cooling is related to the moisture content in the air.