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6.2 Stars and the Universe

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Question 60

Which statement about the production of energy in main sequence stars, such as the Sun, is correct?

A

Stars are powered by nuclear fission, where helium nuclei split into hydrogen nuclei.

B

Stars are powered by chemical combustion, which mainly releases radio waves and microwaves.

C

Stars are powered by nuclear fusion, where lighter nuclei combine to form heavier nuclei, releasing energy.

D

Stars are powered by nuclear fusion, which splits uranium nuclei into helium nuclei.

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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