P1. Heat transfer

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What is a Vacuum?
A region that does not contain any particles.
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How does the temperature of an object affect the rate at which it emits IR radiation?
The higher the temperature of an object the greater the rate at which it emits IR radiation.
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Why are houses in hot countries often painted white?
White is the worst absorber of IR radiation so the house is cooler.
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Why are the pipes on the back of a fridge usually painted black?
Black surfaces are the best emitters of IR radiation.
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What is Infrared radiation?
- These waves can travel through a vacuum.
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Other cards in this set

Card 2

Front

How does the temperature of an object affect the rate at which it emits IR radiation?

Back

The higher the temperature of an object the greater the rate at which it emits IR radiation.

Card 3

Front

Why are houses in hot countries often painted white?

Back

Preview of the front of card 3

Card 4

Front

Why are the pipes on the back of a fridge usually painted black?

Back

Preview of the front of card 4

Card 5

Front

What is Infrared radiation?

Back

Preview of the front of card 5

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