Physics GCSE
Cosmic microwave background radiation
What Cosmic microwave background radiation means in Physics GCSE, as defined for OCR.
Definition of Cosmic microwave background radiation
Check what you remember
Read the wording for your board, then hide it and explain Cosmic microwave background radiation in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
Faint microwave radiation arriving from every direction, interpreted as cooled remnant radiation from the early hot universe.
Topics that use Cosmic microwave background radiation
- Beyond Earth (OCR GCSE)
Related terms
- Absorption and emission of radiation
- Artificial satellites: geostationary and polar orbits
- Constant speed with changing direction
- Effect of the atmosphere on electromagnetic radiation
- Equilibrium between collapse and expansion
- Gravitational force towards the centre
- Greenhouse effect and Earth's temperature
- Inverse relationship between orbital speed and radius
Using Cosmic microwave background radiation in the exam
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