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8.2 Red-shift

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Question 4

The wavelength of a spectral line measured in a laboratory is 500 nm. Astronomers measure the same line in light from two galaxies.

GalaxyDistance from EarthWavelength measured
A0.3 billion light-years510 nm
B0.7 billion light-years524 nm

Calculate the increase in wavelength for each galaxy. Explain what the results indicate about the motion of the galaxies and the universe.

[4]
Markscheme

8.2 Red-shift Questions

  1. GCSE
  2. /Physics
  3. /8.2 Red-shift

79 exam-style questions on AQA GCSE Physics 8.2 Red-shift, covering 8.2 Red-shift. Each one has a worked solution and a mark scheme showing where the marks go.

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