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6.2 Stars and the Universe

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Question 46

A galaxy is 2.0 × 1020 km from the Earth.

At which speed is the galaxy moving away from the Earth?

(Take the Hubble constant to be H0=2.2×10−18 s−1H_0 = 2.2 \times 10^{-18}\text{ s}^{-1}H0​=2.2×10−18 s−1)

A

440 km/s440\text{ km/s}440 km/s

B

4400 km/s4400\text{ km/s}4400 km/s

C

440 m/s440\text{ m/s}440 m/s

D

4400 m/s4400\text{ m/s}4400 m/s

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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