Chapter 12 of 32
Revision Notes
Sources of Energy — Revision Notes
NIOS · Class 10 · Science & Tech
Sources of Energy revision notes for NIOS Class 10 Science & Tech: 4 topics in quick points. Part of the NIOS Class 10 Science & Tech syllabus.
44 questions45 flashcards5 concepts
Interactive on Super Tutor
Studying Sources of Energy? Get the full interactive chapter.
Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for revision notes and more.
Free trial, no card needed.
Super Tutor
Learn better with visuals Super Tutor pairs illustrations like this with notes and quizzes for Sources of Energy.
Key Topics to Revise
1
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
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
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
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.
Get complete notes with diagrams and examples
Full NotesKey Concepts
Energy is defined as the abilityAnything from which usable energy canRenewable sources can be replenishedCoalCoal is a fossil fuel formed
Frequently Asked Questions
What are the important topics in Sources of Energy for NIOS Class 10 Science & Tech?
Key topics in Sources of Energy include Energy and Sources of Energy, Non-Renewable Sources of Energy, Coal and Natural Gas, Nuclear Energy. Study these first, then practise questions on each for the NIOS Class 10 board exam.
How should I revise Sources of Energy for the NIOS Class 10 board exam?
Learn the core ideas first, then work through the 44 practice questions on Sources of Energy. Revise definitions regularly and use flashcards for quick recall before the exam.
Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
More resources for Sources of Energy
For serious students
Get the full Sources of Energy chapter — start free.
Quizzes, flashcards, an AI doubt solver and a study plan for NIOS Class 10 Science & Tech. Free to start, no card needed.