Chapter - 5 Sources of Energy

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Sources of Energy


What are the environmental consequences of the increasing demand for energy? What steps would you suggest to reduce energy consumption?



Some of the environmental consequences of the increasing demand for energy are the following :

  1. The combustion of fossil fuels is producing acid rain and damaging plants (crops), soil and aquatic life.
  2. The burning of fossil fuels is increasing the amount of greenhouse gas (carbon dioxide) in the atmosphere. It has also affected rainfall.
  3. The cutting down of trees from the forest for obtaining fire-wood is causing soil erosion and destroying wildlife.
  4. The construction of hydro-power plants is disturbing ecological balance.
  5. Nuclear power plants are increasing radioactivity in the environment.

The following steps can be taken to reduce energy consumption :

  1. Switch off lights, fans, TV. and other such electrical appliances when not needed, to save electricity.
  2. Use energy-efficient electrical appliances to save electricity. This can be done by using compact fluorescent lamps (CFL) and tube lights in place of conventional filament- type electric bulbs.
  3. Good quality stoves should be used to burn fuels like kerosene and LPG so as to obtain maximum heat.
  4. Pressure cookers should be used for cooking food to save fuel.
  5. Solar cookers should be used to cook food whenever possible and solar water heaters should be used to get hot water.
  6. The use of biogas as fuel should be encouraged in rural areas.
  7. Bicycles should be used for short distances to save fuel like petrol which is used in cars, scooters and motorcycles.

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