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The First and Second Laws of Thermodynamics

The First and Second Laws of Thermodynamics

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Thermodynamics
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The branch of physical science that deals with the relations between heat and other forms of energy (like mechanical, electrical, or chemical energy).
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Temperature
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A measurement proportional to how fast particles of matter are moving (e.g. their kinetic energy).
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Thermal Equilibrium
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When two objects in contact possess or converge upon the same temperature, they are in ____.
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Thermal Expansion
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The tendency of matter to change in volume in response to a change in temperature, through heat transfer.
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Thermal Contact
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Heat conduction between bodies in some form of contact.
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Conduction
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The transfer of heat energy between objects whose surfaces are in contact with one another.
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Convection
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The transfer of heat energy between objects through the movement of fluids (e.g. "hot air rises").
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Radiation
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The transfer of heat energy through electromagnetic waves or as moving subatomic particles, especially high-energy photons.
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1st Law of Thermodynamics
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States that energy can be transformed from one form to another (e.g. from heat to work), but cannot be created or destroyed.
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2nd Law of Thermodynamics
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States that the entropy of the entire universe, as a closed isolated system, is always increasing.
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Entropy
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A property of a system that can described as "randomness" or a measurement of energy dispersal.
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Heat
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Energy transfer that stems from a difference in temperature between two objects.
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