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Learning objective

Recognize that thermal energy transfer via thermal radiation does not need a medium and primarily occurs through infrared radiation.

Read the explanation, check the common trap, then practise with flashcards and questions.

Exam focus

  • Read the explanation.
  • Check key terms.
  • Practise with linked questions.
Cambridge IGCSE Combined ScienceThermal physicsCore content

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Quick explanation

Recognize that thermal energy transfer via thermal radiation does not need a medium and primarily occurs through infrared radiation

  • This point belongs to Transfer of thermal energy, especially Transfer of thermal energy outcomes.
  • You need to be able to recognize that thermal energy transfer via thermal radiation does not need a medium and primarily occurs through infrared radiation.
  • The key ideas to know are State.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

State

Why it matters

This objective helps connect Transfer of thermal energy outcomes to exam-style questions, flashcards, and revision notes for Transfer of thermal energy.

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Practice Questions7 linked questions

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Paper 3 structured question: Transfer of thermal energy

Paper 3Theory (Core)2 marks

Description

Thermal Radiation

Thermal radiation allows heat to be transferred without a medium, primarily through infrared radiation.

  1. a

    Explain how thermal radiation differs from conduction and convection.

    Aim for approximately 2 distinct marking points.

    [2]
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