As a mass of air cools, it reaches a temperature at which it becomes saturated and its water vapour begins to condense. This temperature is called the:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → Dew point
The temperature at which a given sample of air becomes saturated with water vapour is called the dew point. Cooling the air below it causes condensation into dew, fog or clouds.