Sources of Energy
A source of energy is that which is capable of providing enough useful energy at a steady rate over a long period of time.
A Good source of energy should be :
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Safe and convenient to use, For example; energy nuclear can be used only by highly trained engineers with the help of nuclear power plants. It cannot be used for our household purpose.
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Easy to transport, For example; coal, petrol, diesel, LPG etc. have to be transported from the places of their production to the consumers.
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Easy to store, For example; huge storage tanks are required to store petrol, diesel, LPG etc.
Characteristics of a good fuel
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High calorific value.
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Less smoke.
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Less residue after burning.
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Easy availability.
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Inexpensive.
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Easy to store and transport.
Classification of Sources of energy
The sources of energy can be classified as follows :
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Renewable sources of energy.
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Non-Renewable sources of energy.
The topics discussed in this chapter are as follows:
- Conservation of Energy
- What is a good fuel?
- Fossil fuels and Thermal Energy
- Hydropower Plants
- Dams
- Wind energy
- Solar energy
- Energy from the Sea
- Geothermal Energy
- Nuclear Energy
Students can view and download the chapter from the link given below.
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NCERT Solutions for Chapter 14: Sources of Energy
Also Check
Chapter 1: Chemical Reactions and Equations
Chapter 2: Acids, Bases and Salts
Chapter 3: Metals and Non-Metals
Chapter 4: Carbon and its compounds
Chapter 5: Periodic Classification of Elements
Chapter 6: Life Processes
Chapter 7: Control and Coordination
Chapter 8: How do organisms reproduce?
Chapter 9: Heredity and Evolution
Chapter 10: Light - Reflection and Refraction
Chapter 11: The Human Eye and the Colourful World
Chapter 12: Electricity
Chapter 13: Magnetic Effects of Electric Current
Chapter 15: Our Environment
Chapter 16: Sustainable Management of Natural Resources
Check out Frequently Asked Questions (FAQs) for Chapter 14: Sources of Energy
Define solar cell.
Define non-conventional sources of energy.
Non-conventional sources of energy are those which are not used as the conventional ones and meet our energy requirement only on a limited scale.
Examples:
- Tidal energy
- Geothermal energy.
Write down the advantages and disadvantages of a nuclear power plant.
Advantage of Nuclear energy:
- Alternative source of energy due to depletion of fossil fuels.
- From a small amount of fuel, a large amount of energy is released.
Disadvantages of nuclear energy:
- Difficult to store and dispose nuclear waste which may cause environmental contamination.
- High cost of setting up a nuclear plant.
- Limited availability of raw material (uranium).
