Physics

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  • Created by: abetsy
  • Created on: 11-11-14 20:21
How does the temperature of an object affect the rate at which it emits infrared radiation?
The hotter an object is the more infrared radiation it emits in a given time.
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Infrared radiation is energy transfer by __________?
Electromagnetic waves
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Black (also matt and dull) objects are ____ absorbers AND emitters of IR radiation
GOOD
3 of 6
White shiny objects are _____ absorbers And emitters of IR radiation
POOR
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What does energy efficiency mean and how is it worked out?
Efficiency= useful energy output/total energy input. Efficient devices transfer more energy (wasting less)
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Explain why the shiny silver-coloured material on the ironing board helps to make ironing easier
The shiny silver-coloured material reflects the infra-red radiation onto the back of the shirt making it easier to iron the clothing as they absorb the infrared radiation.
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Other cards in this set

Card 2

Front

Infrared radiation is energy transfer by __________?

Back

Electromagnetic waves

Card 3

Front

Black (also matt and dull) objects are ____ absorbers AND emitters of IR radiation

Back

Preview of the front of card 3

Card 4

Front

White shiny objects are _____ absorbers And emitters of IR radiation

Back

Preview of the front of card 4

Card 5

Front

What does energy efficiency mean and how is it worked out?

Back

Preview of the front of card 5
View more cards

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