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7.2 The Universe and red-shift

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Question 8

An observing programme records data for two distant galaxies.

GalaxyDistance from Earth in Mpc\mathrm{Mpc}MpcRecession speed in km/s\mathrm{km/s}km/s
P755250
Qunknown12 950

Assume that both galaxies follow the same proportional relationship between recession speed and distance.

Calculate the distance from Earth to galaxy Q.

[3]
Markscheme

7.2 The Universe and red-shift Questions

  1. GCSE
  2. /Physics
  3. /7.2 The Universe and red-shift

94 exam-style questions on Edexcel GCSE Physics 7.2 The Universe and red-shift, covering 7.2.1 Big Bang and Steady State theories, 7.2.2 Evidence for the Big Bang, 7.2.3 The Doppler effect and red-shift, 7.2.4 Red-shift as evidence for an expanding Universe, and 7.2.5 The CMB and the accepted model. Each one has a worked solution and a mark scheme showing where the marks go.

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