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Learning objective

Recognize that the speed of electromagnetic waves in a vacuum is 3.0 × 10^8 meters per second.

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

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

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Quick explanation

Recognize that the speed of electromagnetic waves in a vacuum is 3.0 × 10^8 meters per second

  • This point belongs to Electromagnetic spectrum, especially Electromagnetic spectrum outcomes.
  • You need to be able to recognize that the speed of electromagnetic waves in a vacuum is 3.0 × 10^8 meters per second.
  • The key ideas to know are State and Give.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

StateGive

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This objective helps connect Electromagnetic spectrum outcomes to exam-style questions, flashcards, and revision notes for Electromagnetic spectrum.

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Paper 4 structured question: Electromagnetic spectrum

Paper 4Theory (Extended)2 marks

Description

Speed of Electromagnetic Waves

Electromagnetic waves travel at a speed of 3.0 × 10^8 m/s in a vacuum. This speed is a fundamental constant in physics and is essential for understanding wave behavior.

  1. a

    Explain the significance of the speed of electromagnetic waves in a vacuum.

    Aim for approximately 2 distinct marking points.

    [2]
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