physics

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  • Created by: sophy
  • Created on: 09-04-13 12:50
what is thermal conduction?
the transfer of energy, such as heat, through a substance by atoms passing some kinetic energy to neighbouring atoms
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what is thermal convection?
The movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to...
2 of 10
what is thermal radiation?
The emission of energy as electromagnetic waves or as moving subatomic particles.
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what is the only method of heat transfer through a vacuum?
thermal radiation
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what speed do infrared waves travel in space?
at the speed of light
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what rays, emitted from the Sun, heat the Earth?
infrared (IR) waves
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what does insulation do?
reduces the rate of heat transfer between areas at different temperatures
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how do you reduce heat transfer by conduction?
use a vacuum, air or water
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how do you reduce heat transfer by convection?
use a vacuum, trapped gas or liquid
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how do you reduce heat transfer by radiation?
use shiny surfaces
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Other cards in this set

Card 2

Front

what is thermal convection?

Back

The movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to...

Card 3

Front

what is thermal radiation?

Back

Preview of the front of card 3

Card 4

Front

what is the only method of heat transfer through a vacuum?

Back

Preview of the front of card 4

Card 5

Front

what speed do infrared waves travel in space?

Back

Preview of the front of card 5
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