Sunday, February 13, 2022

14. Sources of Energy | Class 10 CBSE | Web Notes | Part 4: Environmental Consequences

SOURCES OF ENERGY


ENVIRONMENTAL CONSEQUENCES


Exploiting sources of energy disturbs the environment.


Selection of a source depends on factors such as

o Ease of extracting energy from the source.

o Economics of extracting energy from the source.

o Efficiency of the available technology.

o Environmental damage caused by using the source.


Some energy sources are cleaner than others causing very less environmental damage. E.g. Solar energy, CNG.


Some devices like solar cell are pollution-free, but their assembly may cause environmental damage.


HOW LONG WILL AN ENERGY SOURCE LAST US?


Energy sources are classified as follows:


o  Renewable source: They can be regenerated in nature. E.g. Sun, wind, moving water, biomass, etc.

o  Non-renewable source: They cannot be regenerated in nature. E.g. Coal, petroleum, natural gas, etc.

Non-renewable resources are Exhaustible.

o  Exhaustible sources: They will get depleted after a few hundred years. E.g. Coal, petroleum, etc.

o  Inexhaustible resources: They are unlimited and will not exhaust in future. E.g. Biomass, sun etc.


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