A dam is a wall built across a river or a stream to control water. Dams are built to make a reservoir. A reservoir is a man-made lake in which water is stored and sent across the country in pipes so that people can use it for drinking. washing and cooking. Dams are also built to store water for irrigating fields in the dry season when there is no rain. In the past, dams were built to force water into narrow channels. Today very big dams are built to use the force of water to get electricity.
A) Answer the following questions:
1. When do we need water from Dams?
2. How can we get electricity from water?
Answer:
A) Answering the questions:
1. We need water from dams in various situations:
– Drinking: Dams provide a regulated and controlled water supply for human consumption.
– Washing: Water from dams can be used for laundry, bathing, and other cleaning purposes.
– Cooking: Dams ensure a reliable water supply for cooking and food preparation.
2. Electricity can be generated from water through hydropower, which involves the following process:
– Water stored in the reservoir behind the dam is released through large pipes called penstocks.
– The force of the flowing water turns turbines, which are connected to generators.
– The rotating turbines convert the kinetic energy of the water into mechanical energy, which is then converted into electrical energy by the generators.
– This electricity can be transmitted through power lines and distributed to homes, businesses, and industries for various purposes.
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