PUMPA - SMART LEARNING

எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

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Debate the following two issues in class.

(a) The estimated coal reserves are said to be enough to last us for another two hundred years. Do you think we need to worry about coal getting depleted in this case? Why or why not?

(b) It is estimated that the Sun will last for another five billion years. Do we have to worry about solar energy getting exhausted? Why or why not?

On the basis of the debate, decide which energy sources can be considered
(i) exhaustible,
(ii) inexhaustible,
(iii) renewable and
(iv) non-renewable.

Give your reasons for each choice.
 
(i) Exhaustible:
 
Exhaustible sources of energy are those which  after a few hundred years.
 
(ii) Inexhaustible>
Inexhaustible energy source is one that  and is available in large quantities.
 
(iii) Renewable:
 
Renewable energy sources are those which  and are  in nature.
(iv) Non-renewable:
 
Non-renewable energy sources are those which  and have  in nature.