Using Energy GCSE Physics AQA (higher)

What is it called when the total amount of energy is always the same?

conservation of energy

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What is the object called that transforms one type of energy to another form?

a machine

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What is the energy supplied to the device called?

the input energy

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What is useful energy?

energy transferred to the place we want in the form we want it.

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What is wasted energy?

Not usefully transferred or transformed

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input energy =

useful energy + wasted energy

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As energy spreads out, it gets more/less difficult to use for energy transfers.

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What is the unit of energy?

Joules

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The less energy wasted by a device, the..... efficient the device is said to be.

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Other cards in this set

What is the object called that transforms one type of energy to another form?

a machine

What is the energy supplied to the device called?

What is useful energy?

What is wasted energy?

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