1.19 conservation of energy

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4 Terms

1
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What is the law of conservation of energy?

Energy cannot be created or destroyed; it can only be transferred or stored.

2
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What happens to energy in a closed system?

The total energy remains constant.

3
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Why does energy sometimes appear to be lost?

Because it is transferred to the thermal energy store of the surroundings.

4
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What is meant by useful energy transfer?

Energy that is transferred in a way that is wanted.