Desert Cooler and Evaporation

Desert coolers are more effective on hot, dry days due to the process of evaporation, which causes cooling. The rate of evaporation increases when the air's humidity is low and the surrounding temperature is high. Therefore, on a hot dry day, both these conditions are met, making desert coolers work more efficiently.

Why does a desert cooler work more effectively on a hot dry day?

• Due to the presence of more water

• Because of lower temperatures

• Due to the process of evaporation

• Because of increased humidity

What is one factor that increases the rate of evaporation?

• Low humidity

• Low temperature

• High humidity

• No wind

How does high temperature affect evaporation?

• It stops evaporation

• It decreases the rate of evaporation

• It has no effect on evaporation

• It increases the rate of evaporation

What combination of conditions makes a desert cooler most effective?

• Low humidity and low temperature

• High humidity and high temperature

• Low humidity and high temperature

• High humidity and low temperature

On a hot dry day, what are the conditions that enhance the cooling effect of a desert cooler?

• High humidity and low temperature

• Low humidity and low temperature

• High humidity and high temperature

• Low humidity and high temperature