Why does a desert cooler cool better on a hot dry day?
A desert cooler increases the humidity of the surrounding air The water particles in the air take the heat from the surrounding objects and evaporate. In hot and dry days the moisture level is very low in the atmosphere which increases the rate of evaporation. Because of faster evaporation, the cooler works well. That's why desert cooler cools better on a hot dry day
Knowledge Check
- Question 1 - Select One
Why do you feel cool under a tree but not so under a tin shed on a sunny day?
AThe greenness of the tree gives the coal feeling.BPhotosynthesis absorbs heat Answe neral KnowledgeCThe leaves convert water vapour into which is a heat absorbing processDThe leaves gives out water which vaporises absorbing some heat as latent heat.
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