At what time of day is the relative humidity normally at a minimum ________________ ?
Correct answer: A. When the air temperature is highest
- A. When the air temperature is highest
- B. Just before sunrise
- C. About midnight
- D. When the air temperature is lowest
Explanation
Relative humidity usually falls when air temperature rises, because warmer air can hold more water vapour without becoming saturated. It is therefore normally lowest near the day's maximum temperature.
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