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
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.
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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