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| measure of the average value of the kinetic energy of the molecules in random motion. |
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| the sum of the kinetic and potential energy of all the molecules in an object. |
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| Freezing point of water is 0 degrees; the boiling point of water is 100 degrees |
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| The freezing point of water is 32 degrees; the boiling point is 212 degrees. |
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| 0 K is the lowest temperature an object can have: absolute zero. |
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| the transfer of thermal energy from one object to another when the objects are at different temperatures |
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| particles in a material collide with neighboring particles; the objects are touching |
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| energy is transferred by electromagnetic waves through empty space and matter. |
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| transfer of thermal energy by movement of atoms or molecules from one part of a material to another. |
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| any material that easily transfers thermal energy; metals, gold, copper |
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| materials that reduce the flow of thermal energy; air, down feathers in a coat |
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| the amount of thermal energy needed to raise the temperature of 1 kg of the material by 1 degree Celsius. |
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| increase in the temperature of a body of water caused y adding warmer water to it. |
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| device that converts thermal energy into mechanical energy; a car engine |
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| internal combustion engine |
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| fuel burns in a combustion chamber inside the engine; cars, airplanes, boats, lawn mowers. |
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| a device that absorbs thermal energy and moves it ouside the object; refrigerator, air conditioner, heat pump |
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