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6.2.3a Galaxies and the scale of the Universe

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Question 18

An astrophysicist is investigating the expansion of the universe by studying distant galaxies. Describe how the following quantities are determined for a far-away galaxy:

a.

The distance to the galaxy, using a standard candle (such as a Type Ia supernova).

[3]
b.

The speed of recession of the galaxy.

[3]
Markscheme

6.2.3a Galaxies and the scale of the Universe Questions

  1. IGCSE
  2. /Physics
  3. /6.2.3a Galaxies and the scale of the Universe

59 exam-style questions on CIE IGCSE Physics 6.2.3a Galaxies and the scale of the Universe. Each one has a worked solution and a mark scheme showing where the marks go.

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