A school in Jaipur decides to harvest rainwater from its flat roof. The roof area is 200 square metres and the average yearly rainfall there is about 0.8 m (800 mm). The collected water is stored in an underground tank and used for gardening and toilets. The students also fix leaking taps and put up posters on saving water. (Use: volume of rain on roof = roof area × rainfall height; 1 cubic metre = 1000 L.)

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CASE_STUDIESHydrosphere as Component of Earth SystemDistribution of Water on EarthSustainable Use of Natural Resources3 sub-questions