Physics

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  • Created by: tayla15
  • Created on: 08-04-14 15:26
how does temperature affect the rate of infrared radiation
greater the heat the more radiation it emmits
1 of 15
what is a vacuum
its a region that contains nothing, not even gas particles
2 of 15
why are houses in hot places often painted white
white is the worst heat absorber
3 of 15
why are the pipes on the back of the fridge matte black
because matte black is the best infrared emitting colour
4 of 15
the difference between solid, liquid, & gas particles
gas=far apart, liquid=in contact but still able to move, solid=compact
5 of 15
why are saucepans often made of metal with wooden handles
metal base= good heat conductor & wood handles stay cool to hold
6 of 15
why are materials that trap air good insulators
air is a bad conductor, therefore materials that trap air are good insulators
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why doesnt convection occur in solids
convection doesnt occur in solids as the particles are in fixed positions
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why do fluids become less dense when heated
because it expands, so there is the same mass but a larger surface area
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what effect does decreasing the surface area of a liquid have on its evaporation rate
decreasing the surface area would decrease the evaporation rate
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what affect would decreasing the surface ara of a liquid have on its rate of condensation
decreasing the surface area would decrease the condensation rate
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why does painting an object dull black maximise the rate of energy transfer
it maximises the rate of energy transfer as dull black is the best emmiter of infrared radiation
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why does trapping air in small pockets minimise the rate of energy transfer
it minimises it as convection currents cant be set up
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why is fibreglass a good insulator
it is good as it contains trapped air which is key to a good insulator
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why are the pipes that contain the water in a solar heating panel often painted black
because black is the best absorber of radiation
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Other cards in this set

Card 2

Front

what is a vacuum

Back

its a region that contains nothing, not even gas particles

Card 3

Front

why are houses in hot places often painted white

Back

Preview of the front of card 3

Card 4

Front

why are the pipes on the back of the fridge matte black

Back

Preview of the front of card 4

Card 5

Front

the difference between solid, liquid, & gas particles

Back

Preview of the front of card 5
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