A student concludes that red-shift alone rules out the Steady State theory.
Why is this conclusion incorrect?
Both theories predict that distant galaxies move towards us.
Both theories predict that light slows as it travels to us.
Both theories predict that distant galaxies stay fixed.
Both theories predict that distant galaxies move away from us.
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.