Learning objective
Explain how redshift supports an expanding Universe.
Read the explanation, check the common trap, then practise with flashcards and questions.
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Topic
Cosmology
Subtopic
Hubble's law
Aqa A Level PhysicsAstrophysics
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Quick explanation
Explain how redshift supports an expanding Universe
- This point belongs to Cosmology, especially Hubble's law.
- You need to be able to explain how redshift supports an expanding Universe.
- The key ideas to know are expanding, redshift, and supports.
- Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.
Key concepts
expandingredshiftsupportsuniverse
Why it matters
This objective helps connect Hubble's law to exam-style questions, flashcards, and revision notes for Cosmology.
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Revision notestopic notes
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Open revision notesRelated learning objectives
- Describe Doppler shift for waves from moving sources.
Doppler effect
- Explain redshift in astronomical spectra.
Doppler effect
- Use redshift qualitatively to infer recession.
Doppler effect
- Distinguish Doppler redshift from other wave effects.
Doppler effect
- State and apply Hubble's law.
Hubble's law