Q16 of 269 Page 122

Non- Renewable source of energy - coal, petroleum, natural gas.

The above classification is based on the fact that renewable sources are inexhaustible, whereas non-renewable sources are exhaustible.


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15

Name two sources of energy which you consider to be non-renewable. Give reason for your choice.

 16

Classify the following into renewable and non-renewable sources of energy:

Coal, Wind, Tides, Petroleum, Wood, Natural gas

 17

Coal is said to be formed from the wood of trees. Why then is coal considered to be a non-renewable sources of energy whereas wood is a renewable sources of energy?

 18

What is a fuel? Give five examples of fuels.