Sources of Energy
NIOS · Class 10 · Science & Tech
Complete topic list for Sources of Energy in NIOS Class 10 Science & Tech. Key concepts, sub-topics, and what to focus on for board exams.
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Get startedTopics in Sources of Energy
1. Energy and Sources of Energy
- Energy is defined as the ability to do work.
- A body having energy is capable of doing work.
- Energy appears in many forms such as heat, light, mechanical, electrical, chemical, sound, and nuclear energy.
2. Non-Renewable Sources of Energy
- Coal, crude oil, natural gas, and uranium are non-renewable sources of energy.
- Fossil fuels such as coal, oil, and natural gas are conventional sources of energy.
- Over 85% of energy demands are met by combustion of fossil fuels.
3. Coal and Natural Gas
- Coal is formed by coalification.
- Types of coal are peat, lignite, sub-bituminous, and bituminous.
- Peat is the first or earliest stage of coal formation.
4. Nuclear Energy
- Nuclear energy comes from the nucleus of an atom.
- Nuclear fission is the splitting of a heavy nucleus into roughly equal lighter fragments with release of energy.
- Nuclear fusion is the combining of light nuclei to form a heavier nucleus with release of energy.
Key Concepts
Central concept: Sources of energy are the different ways usable energy is obtained for daily life, industry, transport, and electricity generation.
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