Learning objective

Acknowledge that the redshift observed in light from distant galaxies indicates that the Universe is expanding, supporting the Big Bang Theory.

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Exam focus

Cambridge IGCSE PhysicsSpace physicsCore content

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Quick explanation

This point belongs to The Universe, especially The Universe outcomes.
You need to be able to acknowledge that the redshift observed in light from distant galaxies indicates that the Universe is expanding, supporting the Big Bang Theory.
The key ideas to know are Know.
Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

Know

Why it matters

This objective helps connect The Universe outcomes to exam-style questions, flashcards, and revision notes for The Universe.

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Flashcards10 linked cards

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Practice Questions7 linked questions

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Paper 3Theory (Core)1 marks

Description

Astronomers have observed that the light from distant galaxies is redshifted, indicating they are moving away from us.

a
State the significance of redshift in relation to the Universe.
Your answer
Aim for approximately 1 distinct marking point.
[1]

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