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6.2.3a Galaxies and the scale of the Universe

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Question 17

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

6.2.3a 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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