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Heat Transfer in Nature

CBSE · Class 7 · Science

Quick revision notes for Heat Transfer in Nature — CBSE Class 7 Science. Key concepts, formulas, and definitions for last-minute revision.

44 questions23 flashcards5 concepts

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Key Topics to Revise

1

7.1 Conduction of Heat

  • Conduction is the process of heat transfer from the hotter part of an object to the colder part
  • In conduction, particles pass heat to their neighbors without moving from their positions
  • Heat travels through solids mainly by conduction
2

7.2 Convection

  • Convection is heat transfer by actual movement of particles in liquids and gases
  • When fluids (liquids/gases) are heated, they expand, become lighter, and rise up
  • Cooler, heavier fluid moves down to replace the rising warm fluid
3

7.3 Radiation

  • Radiation is heat transfer without requiring any medium (can travel through vacuum)
  • Heat from Sun reaches Earth through radiation
  • All objects radiate heat to their surroundings
4

7.4 Water Cycle

  • Water cycle is continuous movement of water between Earth's surface and atmosphere
  • Sun's heat causes evaporation from oceans, rivers, lakes
  • Plants release water vapor through transpiration

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Full Notes

Key Concepts

Heat transfer from the hotter partHeat transfer through the actual movementHeat transfer that does not requireMaterials like metals allow heatThe continuous movement of water from

Frequently Asked Questions

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Start by understanding all key concepts. Practise previous year questions from this chapter. Revise formulas and definitions regularly. Use flashcards for quick revision 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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