Astronomers surveying galaxies in the Sculptor Group compare each galaxy's observed wavelength pattern with the pattern produced by the same elements in a laboratory. Which observation would indicate that one of these galaxies is moving towards Earth?
No shift from the laboratory pattern
A change in the pattern of elements compared with the laboratory pattern
A shift towards longer wavelengths than the laboratory pattern
A shift towards shorter wavelengths than the laboratory pattern
79 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.