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P1.1.1 - AQA GCSE Physics Unit 1
P1.1.1 |
Infrared radiation |
a) All objects emit and absorb infrared radiation |
Infra red is part of the electromagnetic spectrum.
'Hotter' refers to temperature. be careful not to confuse heat and temperature. |
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b) The hotter an object is the more infrared radiation it radiates in a given time. |
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c) Dark, matt surfaces are good absorbers and good emitters of infrared radiation. |
This relates to work done on colour and reflection at KS3.
see heat sinks |
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d) Light, shiny surfaces are poor absorbers and poor emitters of infrared radiation. |
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e) Light, shiny surfaces are good reflectors of infrared radiation. |
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