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Physics
OCR GCSE Physics A
Global challenges
Beyond Earth
Red-shift
OCR GCSE Physics A · J249
Red-shift
What you need to know
Explain the red-shift of light from receding galaxies (qualitative only).
Understand changes in frequency and wavelength.
Identify the change in galaxy speed with distance as evidence of an expanding universe.
Revision notes
1
Red-shift
4 key terms
Practise with past papers
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Big-Bang evidence
