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66. Question: Why are air coolers less efective during the rainy season?

Answer: During the rainy reason, the atmosphere air is saturated with

moisture. Thereore, the process o evaporation o water rom the moist

pads o the cooler slows down there!y not cooling the air !lown out rom

the cooler.

6". Question: Why does grass gather more dew in nights than metallic

o!#ects such as stones?

Answer: $rass !eing a good radiator ena!les water vapour in the air to

condense on it. %oreover, grass gives out water constantly &transpiration'

which appears in the orm o dew !ecause the air near grass is saturated

with water vapour and slows evaporation. Dew is ormed on o!#ects which

are good radiations and !ad conductors.