Energy can neither be created nor destroyed in the context of this statement explain why do we talk about energy crisis??
Answers
Answer:
because energy is very important thing in our life. without energy no work is possible. so we are talking about energy. it is the theory which has been proved by various examples. also Einstein give the mass energy equivalence theorem.
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About the Law(Law of Conservation of Energy) :-
1)This is the first law of Thermodynamics.
2)This law states that Energy can only be transferred or changed from one form to another.
3)This law states that energy neither be created or destroyed in an isolated system.
#Explanation :-
=>It is true that energy cannot be destroyed. However the amount of usable form of energy sources are limited. Once they get consumed, the energy will be lost in the form of heat which can not be captured back.
=>Energy on Earth exists in terms of chemical energy in substances, kinetic energy in water in rivers, heat energy from Sun , wind energy etc.
=>We are consuming all these and making many products useful for our lives.
=>Due to using the energy in various forms, we are increasing the temperature of Earth's atmosphere.
=>We are using a lot of burning and heating. So temperatures are going up.
=>Thus we are converting energy form a useful state into heat energy of atmosphere and into unusable waste products too.
=>These processes are not reversible. To restore energy back to its previous state, it takes much more energy.
=>So we have energy crisis. That one day all fuels may be used up. Prices will be too high. Pollution will be too much.