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Recession velocity — OCR Physics B Definition | GradeGen.AI

Courses
Physics B
Key Terms
Recession velocity

GCSEOCRJ259

Recession velocity

Key term for OCR GCSE Physics B, used in The Big Bang.

Definition

The speed at which a distant galaxy is moving away from the Earth.

Exam Context

Recession velocity appears in OCR GCSE Physics B revision content for Matter – models and explanations, especially The Big Bang and The Big Bang.

Matter – models and explanations The Big Bang The Big Bang

Found in Revision Notes

Matter – models and explanations

Red-shift and Evidence for the Big Bang

The Big Bang • The Big Bang

Related Key Terms

Absorption spectrum Big Bang model CMBR Cosmological red-shift

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Hubble Constant (H₀)

Receding galaxy