An astronomer measures the same spectral line from two distant galaxies. Galaxy P has a greater red-shift than galaxy Q.
Which conclusion agrees with the general pattern for distant galaxies?
P is further away and recedes faster than Q.
P is further away and recedes slower than Q.
P is nearer and recedes faster than Q.
P is nearer and recedes slower than Q.
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.