Space PhysicsAQA GCSE Physics (8463)

Red Shift

Work through the notes, try the practice questions, then take the quiz. The report tells you exactly what to revise next. (2026)

Practice progress

5 MCQs

0 of 5 attempted

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Remaining

1
Light from a distant galaxy shows red-shift. This means the galaxy is:
Answer & explanation
Correct: option B
Red-shift = source receding (moving away).
2
Compared to a nearby galaxy, light from a more distant galaxy is:
Answer & explanation
Correct: option B
Further away = greater red-shift = receding faster.
3
Red-shift is evidence that the universe is:
Answer & explanation
Correct: option C
Galaxies receding in every direction → expansion.
4
Which theory of the origin of the universe does red-shift support?
Answer & explanation
Correct: option B
An expanding universe today means it was compressed in the past — the Big Bang.
5
Which is required to explain why galaxies spin faster than their visible matter would allow?
Answer & explanation
Correct: option B
Dark matter provides the additional gravity needed.

Space PhysicsAQA GCSE Physics (8463)

Work through the notes, try the practice questions, then take the quiz. The report tells you exactly what to revise next. (2026)

5 MCQs

0 of 5 attempted

Correct

Incorrect

Remaining

1
Light from a distant galaxy shows red-shift. This means the galaxy is:
Answer & explanation
Correct: option B
Red-shift = source receding (moving away).
2
Compared to a nearby galaxy, light from a more distant galaxy is:
Answer & explanation
Correct: option B
Further away = greater red-shift = receding faster.
3
Red-shift is evidence that the universe is:
Answer & explanation
Correct: option C
Galaxies receding in every direction → expansion.
4
Which theory of the origin of the universe does red-shift support?
Answer & explanation
Correct: option B
An expanding universe today means it was compressed in the past — the Big Bang.
5
Which is required to explain why galaxies spin faster than their visible matter would allow?
Answer & explanation
Correct: option B
Dark matter provides the additional gravity needed.