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6.2.3a Galaxies and the scale of the Universe

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Question 25

The star Sirius is about 8.6 light-years8.6\text{ light-years}8.6 light-years away from the Earth.

A student makes three statements about this star:

  1. Light from Sirius takes about 8.6 years8.6\text{ years}8.6 years to reach the Earth.
  2. The distance to Sirius is about 8.6 times the distance light travels in one year.
  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 and 3 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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