Learning objective

Recognize that light from distant galaxies appears redshifted compared to light observed on Earth.

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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 recognize that light from distant galaxies appears redshifted compared to light observed on Earth.
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 noted that light from galaxies billions of light-years away appears redshifted, indicating their movement away from Earth.

a
State the meaning of redshift in the context of astronomy.
Your answer
Aim for approximately 1 distinct marking point.
[1]

Revision notestopic notes

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