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7.2 The Universe and red-shift

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Question 11

A research team measures the recession speeds of three distant galaxy clusters.

Galaxy clusterRecession speed in km/s
J7500
K15 000
L22 500

The team then records the same absorption line in the light from each cluster.

Which prediction about the three clusters is most likely to be correct?

[1]
A

The observed wavelength is the same for J, K and L; for distance, J is smallest, K is intermediate and L is largest.

B

For both observed wavelength and distance, J is smallest, K is intermediate and L is largest.

C

For observed wavelength, J is smallest, K is intermediate and L is largest; for distance, J is largest, K is intermediate and L is smallest.

D

For observed wavelength, J is largest, K is intermediate and L is smallest; for distance, J is smallest, K is intermediate and L is largest.

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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