Question

How has the traditional use of wind and water energy been modified for our convenience?

Answer 1

Hint: windmills are used to generate electricity. In windmills
Dams have been constructed on the river for generating electricity.

Complete step by step solution:
We stored water from a high level in the dam and carried it through pipes to the turbine at the bottom of the dam and ran a hydropower plant, used to generate electricity. For the same purpose, the rotatory motion of a wind mill is used to turn the turbine of the electric generator.
Water energy: Large numbers of high dams are constructed on the suitable river spots to obstruct the flow of water and collect water in large reservoirs, which can be used for producing electricity. When the water falls from a height, kinetic energy of the flowing water is converted into potential energy. Then, water from the dam is carried through pipes to the turbine at the bottom of the dam. This converts the potential energy of water into electrical energy. We can see water everywhere but not much freshwater is available to drink. The use of water has also changed since the olden days.
Earlier:
Water only for drinking, washing and other daily chores.
Present-day:
Water energy which was used for transportation before is now a good source to generate electricity. Dams have been constructed on the river for generating electricity. Waterfalls were used as a source of potential energy which was converted to electricity with the help of turbines.
Wind energy: Windmill farms are constructed at places where wind flows for a greater part of the year at a speed greater than $15km/h$.The kinetic energy of the wind is converted into rotary motion of the windmill using huge blades. Then the rotatory motion of the windmill is used to turn the turbine of the electric generator. Thus, electricity is generated.
Earlier:
Earlier, the windmills were used to harness wind energy to do mechanical work such as lifting/drawing water from a well.
Present-day:
Today, windmills are used to generate electricity. In windmills, the kinetic energy of wind is harnessed and converted into electricity.

Note: When the water falls from a height, kinetic energy of the flowing water is converted into potential energy. The kinetic energy of the wind is converted into rotary motion of the windmill using huge blades.