Question

A desert cooler cools better on a hot dry day.

Answer 1

1. Humidity is low on a hot dry day.
2. The water particles get heated due to hot weather. As a result, high energy water particles evaporate.
3. Therefore, the average molecular energy of the remaining water particles is lowered. As a result, there is a decrease in temperature on the part of liquid that is left.
4. So, the water pads get cooled and circulate cool air.
5. Hence, a desert cooler cools better on a hot dry day.