The Big Bang theory describes conditions in the early universe.
How did the temperature of the early universe compare with the temperature of the universe today?
It was lower, because the universe was much smaller
It was the same, because temperature cannot change
It was lower, because there were no stars to heat it
It was higher, because the universe was much smaller
41 exam-style questions on AQA GCSE Physics 8.2 Red-shift, covering 8.2 Red-shift. Each one has a worked solution and a mark scheme showing where the marks go.