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Learning objective

Recognize that one light-year is equivalent to 9.5 x 10^15 meters.

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 PhysicsSpace physicsSupplement content

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Recognize that one light-year is equivalent to 9.5 x 10^15 meters

  • This point belongs to Stars, especially Stars outcomes.
  • You need to be able to recognize that one light-year is equivalent to 9.5 x 10^15 meters.
  • The key ideas to know are Know and State.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

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KnowState

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Description

Light-Year Measurement

A light-year is a unit of distance used in astronomy to measure how far light travels in one year. It is equivalent to approximately 9.5 x 10^15 meters.

  1. a

    State the distance of one light-year in meters.

    Aim for approximately 1 distinct marking point.

    [1]
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