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6.2 Stars and the Universe

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Question 17

Which of the following observations provides key evidence for the expansion of the Universe?

A

The temperature of the cosmic microwave background radiation is steadily increasing over time.

B

The wavelength of light received from distant galaxies is shifted towards the red end of the spectrum.

C

All stars in nearby galaxies are older than those in our own galaxy.

D

The Andromeda galaxy and the Milky Way are moving away from each other at high speed.

Markscheme

6.2 Stars and the Universe Questions

  1. IGCSE
  2. /Physics
  3. /6.2 Stars and the Universe

104 exam-style questions on CIE IGCSE Physics 6.2 Stars and the Universe, covering 6.2.1 The Sun as a star, 6.2.2a Galaxies and astronomical distances, 6.2.2b The life cycle of a star, 6.2.3a Galaxies and the scale of the Universe, 6.2.3b Redshift, 6.2.3c The Big Bang Theory and cosmic microwave background radiation, and 6.2.3d The Hubble constant and the age of the Universe. Each one has a worked solution and a mark scheme showing where the marks go.

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