Physics GCSE
greenhouse gases
What greenhouse gases means in Physics GCSE, as defined for AQA.
Definitions of greenhouse gases
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Reference: AQA
Gases such as carbon dioxide and methane that absorb outgoing infrared and re-emit some of it downwards, cutting the rate of loss to space.
These absorb infrared and re-emit some of it in all directions, including back down.
Topics that use greenhouse gases
- Perfect black bodies and radiation (AQA GCSE)
Related terms
- absorption by the Earth
- glowing objects
- intensity against wavelength
- self limiting heating
- temperature dependence
- emission into space
- everyday examples
- interpreting arrow sizes
Using greenhouse gases in the exam
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