Light from distant galaxies is redshifted when observed from Earth. This redshift provides vital evidence to support the Big Bang theory.
Which of the following statements is correct?
Light from galaxies that are moving away from Earth is blueshifted.
Redshift is a decrease in the frequency of electromagnetic radiation as its wavelength increases.
The Big Bang theory states that the Milky Way galaxy is at the center of the expanding Universe.
The further away a galaxy is from Earth, the smaller its redshift.
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.