Which statement about the expansion of the Universe and redshift is correct?
Redshift describes a decrease in the wavelength of light from receding galaxies.
Light from distant galaxies is redshifted, suggesting that the Universe is expanding.
Galaxies that are further away from us show a smaller redshift than closer galaxies.
The cosmic microwave background radiation (CMBR) is evidence that the Universe is contracting.
59 exam-style questions on CIE IGCSE Physics 6.2.3a Galaxies and the scale of the Universe. Each one has a worked solution and a mark scheme showing where the marks go.