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AP® Environmental Science

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Moderate

First Law of Thermodynamics

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Which of the following situations demonstrates the First Law of Thermodynamics?

A

A kicked ball slows down demonstrating a loss of energy. In every system, some energy is destroyed as it is used.

B

Loss of heat as friction in an internal combustion engine proves that energy can be destroyed.

C

The amount of energy released when wood is burned is equal to the amount taken in during photosynthesis.

D

The amount of energy in the coal burned in a coal-fired power plant is equal to the amount of electricity produced.

E

The amount of UV rays absorbed by the ozone layer is equal to the amount of sunlight reflected by the clouds.