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Work and Energy

ICSE · Class 5 · Science

Quick revision notes for Work and Energy — ICSE Class 5 Science. Key concepts, formulas, and definitions for last-minute revision.

47 questions30 flashcards5 concepts

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Key Topics to Revise

1

What is Work?

  • In science, work is done only when a force moves an object in the direction of the force.
  • If there is no movement, no work is done — even if you are applying force.
  • Examples: Pushing a wall does not count as work because the wall does not move.
2

What is Energy?

  • Energy is the ability or capacity to do work.
  • We need energy to apply force and do work.
  • We get energy from food, the Sun, fuels, wind, and water.
3

Forms of Energy

  • Heat Energy: Comes from the Sun, burning fuels. Used for cooking and warming.
  • Light Energy: Helps us see. Comes from the Sun, bulbs, candles.
  • Mechanical Energy: Energy of motion or position. Includes kinetic (moving) and potential (stored) energy.
4

Sources of Energy

  • Sun is the main source of energy — gives heat and light.
  • Plants use solar energy to make food (photosynthesis).
  • Fuels like coal, petrol, and natural gas are formed from ancient plants and animals — called fossil fuels.

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Full Notes

Key Concepts

In scienceEnergy is the power or capacityEnergy comes in many formsThe Sun is the biggest sourceRenewable sources like sunlight

Frequently Asked Questions

What are the important topics in Work and Energy for ICSE Class 5 Science?
Work and Energy covers several key topics that are frequently asked in ICSE Class 5 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Work and Energy — ICSE Class 5 Science?
Understand the core concepts first, then work through the 47 practice questions available for this chapter. Revise formulas and 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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