Question

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

Answer 1

Hey kavya!
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Wood and water are tradition sources of energy. Continuous supply of energy from these sources cannot be maintained as it requires enough trees to be planted.

Therefore, following modifications are for our convenience:-

i). Wood is converted into charcoal by destructive distillation of wood which is a better fuel than wood.

Use of charcoal is also ecofriendly as it doesn't produce smoke on burning. It has higher calorific value and leaves less residue on burning.

ii). Use of water energy needs the construction of big dams. So these dams are being constructed at limited number of places.

To improve the output of water energy, the technology is being developed to increase the efficiency of devices used to convert water energy into electricity.

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hope it helps ^_^

Answer 2

In olden days, wind energy was trapped used windmills to do mechanical works like lifting or drawing water from a well. But these days, windmills are used to generate electricity. The kinetic energy of wind is trapped and converted into electricity with the help of rotatory motion of the blades, which turns the turbine of the electric generator to produce electricity.

Similarly, waterfalls were the source of potential energy in olden days. But these days as the number of waterfalls has reduced, water dams are constructed and are used as a source to trap the potential energy. Here, the water falls from a certain height on the turbine producing electricity.