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17 Cards in this Set
- Front
- Back
- 3rd side (hint)
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How is Heat Energy Transferred? |
Radiation, Conduction, Convection |
R, C, C |
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How is Heat Radiation Transferred? |
Transfer of heat energy by infrared radiation |
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What involves the transfer of energy by particles? |
Conduction and Convection |
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What is Conduction? |
Main form of heat transfer in solids |
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What is Convection? |
Main form of heat transfer in liauids and gases |
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How can infrared radiation be emitted? |
By solids, liquids and gases |
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What is Infrared Radiation? |
All objects are continually emitting and absorbing infrared radiation. Emitted from the surface of an object. |
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What reflects IR radiation? |
Light,shiny surfaces |
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What absorbs IR radiation? |
Dark, matte surfaces |
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What is Conduction of heat energy? |
Vibrating particles pass on their extra kinetic energy to neighbouring particles |
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Why are metals good conductors? |
Because the electrons are free to move inside the metal |
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What is Convection of heat? |
Convection occurs when the more energetic particles move from the hotter reigon an take the heat energy with them. |
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What are Convection currents? |
Change in Density. |
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When does hear transfer faster through materials? |
With higher U-Values |
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How do u work out specific heat capacity? |
E=M x C x 0 |
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How do u work out efficiency? |
Useful energy (power) Out ÷ total energy (power) In |
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How do u work out Energy? |
Power X Time |
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