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CBSE Class 7 Answered

(i) Why the maximum and minimum temperature of cities is higher than in rural areas?(ii) Why does relative humidity change over a day?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
answered-by-expert Expert Answer
(i)

1.Concrete ground absorbs more heat in comparison to soil and retains it for a longer time.

2.Urban areas lack shade of trees.

3.Cooling effect in urban areas is relatively less due to less transpiration effect of plants.

(ii) Relative humidity of a place changes over a day because earth does not receive equal amount of heat throughout the day.
Answered by | 04 Jun, 2014, 03:23: PM

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