According to my GCSE physics revision guide, fur traps a layer of air, preventing the air from moving so it can't transfer heat by convection. It then also briefly mentions that both air and fur are very good insulators.
Therefore, I'm slightly unsure as to what to put in an exam if there is a question about how fur reduces heat loss. The answer to a question about fur in the same book mentions convection, but not conduction, so since I talked about conduction in my answer, I got the question wrong.
I'd be grateful if someone could tell me what I should say in an exam. Just in case, would it be best if I mentioned both conduction AND convection?
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Does fur prevent heat loss by conduction or convection (or both)? watch
- Thread Starter
- 22-07-2013 14:01
- 22-07-2013 14:15
If this question came up in an exam, I would explain how the air is trapped by the layer of fur. I don't see why you would talk about conduction in this case, unless you're trying to say that the fur WON'T conduct the heat to the air as it's an insulator, but this won't get you any points, as you're not answering the question by talking about conduction.
- Study Helper
- 22-07-2013 14:33
The fur limits convection as Wenna stated. Heat is therefore lost at a much slower rate but not entirely stopped.
The skin part of the fur i.e. on the inside will warm up through radiation, convection and conduction, but it's the air that gets trapped that prevents the conduction losses which is the major source of heat loss.
It's also why fur is useless to prevent heat loss when it gets wet.
- Thread Starter
- 05-08-2013 19:11
OK, thank you for all your replies!