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7.2 The Universe and red-shift

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Question 5

An astronomy team measures the distances and recession speeds of three distant galaxies. Distances are given in megaparsecs (Mpc).

Distance in MpcRecession speed in km/s
151080
302160
453240

Another galaxy is 25 Mpc25\ \mathrm{Mpc}25 Mpc away.

Using the pattern in the table, which recession speed would the team expect for this galaxy?

[1]
A

1620 km/s1620\ \mathrm{km/s}1620 km/s

B

2700 km/s2700\ \mathrm{km/s}2700 km/s

C

2160 km/s2160\ \mathrm{km/s}2160 km/s

D

1800 km/s1800\ \mathrm{km/s}1800 km/s

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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