A student writes: 'The Big Bang was an explosion that threw the galaxies out into empty space.'
Which statement corrects this idea?
The galaxies were thrown out by a series of explosions
The galaxies have always been in exactly the same place
Space itself is expanding and carrying the galaxies apart
The galaxies are falling inwards towards a central point
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.