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Syllabus

Energy — Syllabus

ICSE · Class 10 · Environmental Science

What Energy covers in ICSE Class 10 Environmental Science: 4 topics, for the 2026-27 session. Part of the ICSE Class 10 Environmental Science syllabus.

51 questions48 flashcards5 concepts

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4 Topics · ICSE Class 10 Environmental Science · 2026-27

Topics in Energy

1

Fossil Fuels and Electricity Generation

  • Fossil fuels were formed by decomposition and alteration of remains of plants and animals over millions of years without oxygen.
  • Large plants became coal; small plants and animals became petroleum and natural gas.
  • Coal, petroleum and natural gas are non-renewable sources of energy.
2

Nuclear Energy

  • Nuclear power or nuclear energy uses exothermic nuclear processes to generate useful heat and electricity.
  • Radioactive atoms emit radiation.
  • Nuclear fission is an exothermic nuclear reaction in which heavy atoms such as Uranium-238 split into fast moving light elements called fission products.
3

Safety Concerns and Nuclear Disasters

  • All nuclear explosions release 5% radioactive strontium-90.
  • Strontium-90 causes pollution of air, water and soil.
  • Strontium-90 replaces calcium in plants, animals and human bones and causes bone cancer and tissue degeneration.
4

Renewable Energy Sources

  • Renewable sources of energy produce energy over and over again.
  • Examples of renewable energy sources are biogas, solar energy, wind energy, energy from falling water, energy from waste and tidal energy.
  • Solar, wind, hydro and geothermal power are renewable because they are replenished by physical means.

Key Concepts

Central concept: Energy resources and their conversion for electricity, transport, and sustainable use

Fossil fuelsElectricity generationRenewable energy resourcesNuclear energyEnergy conservationAlternative liquid fuels

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Frequently Asked Questions

What are the important topics in Energy for ICSE Class 10 Environmental Science?
Key topics in Energy include Fossil Fuels and Electricity Generation, Nuclear Energy, Safety Concerns and Nuclear Disasters, Renewable Energy Sources. Study these first, then practise questions on each for the ICSE Class 10 board exam.
How should I revise Energy for the ICSE Class 10 board exam?
Learn the core ideas first, then work through the 51 practice questions on 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.

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All ICSE Class 10 Environmental Science Syllabus

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