1.2 - Surfaces and radiation Flashcards
1
Q
What surfaces are good absorbers of infrared radiation?
A
Dark, matt surfaces
2
Q
What surfaces are good emitters of infrared radiation?
A
Dark, matt surfaces
3
Q
What surfaces are good reflectors of infrared radiation?
A
Light, shiny surfaces
4
Q
Why are houses in hot countries often painted white?
A
White objects are not good absorbers of infrared radiation, so will not become as hot as a house painted black left in the Sun
5
Q
Why are the pipes on the back of a fridge usually painted black?
A
Dark, matt surfaces are good emitters of infrared radiation, which means they will transfer energy and cool more quickly than if they were painted white
