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6.2 Stars and the Universe

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Question 73

The bright star Altair is located at a distance of approximately 16.7 light-years from Earth.

Which of the following statements are correct?

  1. Telescope images of Altair show it as it was 16.7 years ago.
  2. If an astronaut near Altair sent a radio message to Earth, the signal would take 16.7 years to arrive.
  3. Altair is located outside the Milky Way galaxy.
A

1, 2 and 3

B

1 and 2 only

C

1 and 3 only

D

2 and 3 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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