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Calculate the duration it takes for light to cover significant distances, such as between celestial bodies in the Solar System.

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Cambridge IGCSE Combined ScienceSpace physicsCore content

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Calculate the duration it takes for light to cover significant distances, such as between celestial bodies in the Solar System

  • This point belongs to Stars and the Universe, especially Stars and the Universe outcomes.
  • You need to be able to calculate the duration it takes for light to cover significant distances, such as between celestial bodies in the Solar System.
  • The key ideas to know are Calculate and Determine.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

CalculateDetermine

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Paper 3 structured question: Stars and the Universe

Paper 3Theory (Core)2 marks

Description

Light Travel Time Calculation

The distance from the Sun to Mars is approximately 227.9 million kilometers. Calculate the time it takes for light to travel this distance.

  1. a

    Calculate the time it takes for light to travel from the Sun to Mars.

    Aim for approximately 2 distinct marking points.

    [2]
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