Physics GCSE
Expansion and cooling of the universe
What Expansion and cooling of the universe means in Physics GCSE, as defined for OCR.
Definition of Expansion and cooling of the universe
Check what you remember
Read the wording for your board, then hide it and explain Expansion and cooling of the universe in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
An initial hot dense state followed by expansion and cooling, which together explain the observations.
Topics that use Expansion and cooling of the universe
- Beyond Earth (OCR GCSE)
Related terms
- Absorption and emission of radiation
- Artificial satellites: geostationary and polar orbits
- Constant speed with changing direction
- Cosmic microwave background radiation
- Effect of the atmosphere on electromagnetic radiation
- Equilibrium between collapse and expansion
- Gravitational force towards the centre
- Greenhouse effect and Earth's temperature
Using Expansion and cooling of the universe in the exam
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