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6.2 Stars and the Universe

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Question 25

The star Sirius is approximately 8.6 light-years away from the Earth.

A student makes three statements about Sirius:

  1. Light emitted from Sirius takes about 8.6 years to reach the Earth.
  2. The physical distance to Sirius is approximately 8.1 × 1013 km.
  3. Sirius is located outside our galaxy (the Milky Way).

Which statements are correct?

A

1, 2 and 3

B

1 and 2 only

C

1 and 3 only

D

2 only

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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