7th Class Social Science Sample Paper Social Science Sample Paper - 8

  • question_answer 9)
    Give reasons:                                                                                                                            
    (i) Wet clothes take longer time to dry on a humid day.
    (ii) Amount of insolation decreases from equator towards poles.

    Answer:

    (i) On a humid day, evaporation takes place at a much slower rate than a dry day. Therefore, evaporation from a wet cloth is also slow. Hence, wet clothes take longer time to dry on a humid day.
    (ii) It is because the solar radiation received gradually decreases as we move from equator towards poles. So solar energy, i.e. insolation also decreases.                    


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