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Thermal Energy and Temperature

This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.

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Thermal energy is the kinetic energy of randomly moving atoms and molecules; temperature measures how hot that motion makes a sample.

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Molecules in hot water move faster on average than molecules in cold water, so the hot sample reads a higher temperature.

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Temperature measures motion per particle, never the total thermal energy in a sample, regardless of that sample's size.