(a)[2]
State the meaning of redshift.
(b)[2]
Explain how observations of redshift lead to the idea that the universe is expanding.
(c)[3]
Explain how Hubble’s law gives rise to the Big Bang theory for the origin of the universe.
Physics 9702 · AS & A Level · Hubble's law and the Big Bang theory
Hubble's law and the Big Bang theory — practice question
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This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: “a galaxy's recession (away from the observer) causes the emitted light to show” …
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