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Expansion of the Universe — Edexcel GCSE Physics Definition | GradeGen

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Physics
Key terms
Expansion of the Universe

GCSE Physics · key term

Expansion of the Universe

Definition

The increase over time in the distances between widely separated galaxies as space expands.

Used by Edexcel

How each exam board covers it

Edexcel GCSE Physics · 1PH0

Specification 7.8P, 7.13P, 7.14P · Paper 1

An increase in the distances between widely separated galaxies as the space between them expands.
Revise: Theories of Universe Origin
An increase over time in the distances between widely separated galaxies.
Revise: Expansion Evidence
Revise: Theories and Red-shift

Related key terms

Big Bang theory
Red-shift
Steady State theory
Absorption spectrum
Recession

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