Question 34
FThe Figure shows the absorption spectrum of light from the Sun and the absorption spectrum of light from a distant galaxy.
Figure
a.[2]
Describe how the spectrum of light from the galaxy is different from the spectrum of light from the Sun.
b.[1]
State what this difference shows about the motion of the galaxy.
c.[1]
The light from a second galaxy is also observed. The second galaxy is further away than the first galaxy.
Describe how the spectrum of light from the second galaxy would be different from the spectrum of light from the first galaxy.
d.[1]
The light from one nearby galaxy is blue-shifted.
State what this shows about the motion of this galaxy.
7.2 The Universe and red-shift Questions
94 exam-style questions on Edexcel GCSE Physics 7.2 The Universe and red-shift, covering 7.2.1 Big Bang and Steady State theories, 7.2.2 Evidence for the Big Bang, 7.2.3 The Doppler effect and red-shift, 7.2.4 Red-shift as evidence for an expanding Universe, and 7.2.5 The CMB and the accepted model. Each one has a worked solution and a mark scheme showing where the marks go.