Question

What do you mean by river Dams? Mention it's advantages disadvantage?

Answer 1

A DAM is an obstruction built to keep down water and raise its level, shaping a store used to produce electricity or as a water supply. They help in saving and overseeing water by putting away a lot of water with the goal that when there is no rain and your crops are excessively dry you can get water from the dam and it gets water from the river and rain. 

Dams are essential since they enable individuals to have water to drink and give water to industry, water for irrigation, water for angling and diversion, water for hydroelectric power creation, water for a route in rivers, and different needs. Dams additionally serve individuals by diminishing or counteracting floods.

Water stored in a dam possess POTENTIAL ENERGY or mechanical energy. And when the water is flowing or falling in the dam that energy is known as KINETIC ENERGY.

Potential energy is a sort of energy which for instance the object has and that is because of its position. A rock over a slope has a great deal of potential energy since it could move down really quick at any minute.

Answer 2

A river Dam is a barrier to obstruct the flow of water, Especially one of earth built across a stream of river

The following are the advantages of river dams:

1. It can be built to provide Drinking water, recreation, Flood Control and Also for power generation.
2. Electricity can be produce at constant rate

Disadvantages :

1.   Lot of agricultural land is needed
2.    sometimes it needs to remove the living population which is very difficult.