Term
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Definition
| transfer of energy by electromagnetic waves |
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Term
| best absorbers and emitters of thermal radiation |
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Definition
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Term
| poor absorbers and emitters of infra red |
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Definition
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Term
| transfer of energy by colliding particles |
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Definition
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Term
| transfer of energy by hot gases and liquids rising |
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Definition
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Term
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Definition
| energy is not created or destroyed |
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Term
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Definition
| useful energy transferred divided by total energy supplied - tells us what fraction of the energy is transferred as what was required |
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Term
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Definition
| energy which is not transferred in a useful way |
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Term
| a unit of electrical energy |
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Definition
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Term
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Definition
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Term
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Definition
| a joule of energy transferred each second |
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Term
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Definition
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Term
| 1500 watts in kilowatts is ... |
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Definition
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Term
| 750 watts in kilowatts is.. |
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Definition
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Term
| energy is normally measured in |
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Definition
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Term
| electricity is transferred along the |
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Definition
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Term
| used to step up the voltage at the power station |
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Definition
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Term
| the voltage is stepped up on the national grid because |
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Definition
| it reduces the current and so the energy lost as heat |
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Term
| the units used by a 3kW kettle in 2 hours |
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Definition
| 3kW x 2hrs = 6 units (kWhours) |
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Term
| driven round by steam, water or air |
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Definition
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Term
| when rotated it produces electricity |
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Definition
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Term
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Definition
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Term
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Definition
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Term
| energy sources that will not run out |
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Definition
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Term
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Definition
| a power station using water falling down hill from a damn in the mountains |
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Term
| pollution from wind turbines |
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Definition
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Term
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Definition
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Term
| the way nuclear fuels produce energy |
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Definition
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