Sunday, 17 January 2016

Clas 4. Our Water Wealth.


Ans1.Sea water cannot be used for drinking or irrigation as it contains salt.

Ans 2. Rivers are full of water during the monsoon months , so very often there are floods during these months . The extra water simply flows into the sea. On the other hand , many rivers dry up during the hot summer months causing shortage of water.
  1. What is Hydroelectricity?
    Electricity generated from the force of water in a dam is called hydroelectricity.


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