Keeping homes warm - P1b

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  • Created by: iram_f
  • Created on: 24-09-14 16:59
How does conduction work?
When a substance is heated the kinetic energy of the particles increase, so the energy transfer between particles is quicker, meaning that the substance is heated quickly.
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What are some methods of reducing heat loss in the home?
You could install fibreglass roof insulation, foam cavity wall insulation and double glazing, which all work by reducing conduction and convection using air as an insulator.
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What are the differences between dark, matte surfaces and light, shiny surfaces?
Dark, matte surfaces are better absorbers of radiation whilst light, shiny surfaces are better reflectors. At the same temperature, dark surfaces emit more radiation than light surfaces.
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Why is air a good insulator?
Air is a good insulator because its gas particles are far apart, so energy cannot be transferred quickly.
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How does cavity wall insulation work?
A cavity wall is made of an inner and outer wall, with a cavity in between, which allows conduction and convection to occur. By putting foam that contains trapped air particles inside the cavity you reduce heat loss by convection.
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Other cards in this set

Card 2

Front

What are some methods of reducing heat loss in the home?

Back

You could install fibreglass roof insulation, foam cavity wall insulation and double glazing, which all work by reducing conduction and convection using air as an insulator.

Card 3

Front

What are the differences between dark, matte surfaces and light, shiny surfaces?

Back

Preview of the front of card 3

Card 4

Front

Why is air a good insulator?

Back

Preview of the front of card 4

Card 5

Front

How does cavity wall insulation work?

Back

Preview of the front of card 5

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