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6.2 Stars and the Universe

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Question 28

An astronomer detects Cosmic Microwave Background Radiation (CMBR) coming from all directions in space. Which statement about CMBR is correct?

A

It is evidence of a contracting Universe, supporting the Steady State theory.

B

It is the redshifted remnant of radiation from the early Universe, supporting the Big Bang theory.

C

It is high-frequency radiation emitted recently by stars in nearby galaxies.

D

It is light from distant stars that has been blueshifted as it travels through space.

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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