________ in winter clothes, for example, impede the transfer of heat energy away from the body.
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Natural gas
________ and oil, for example, release energy that we use to cook our food, heat our houses, and power our cars.
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Central Asia
A rainstorm in ________ or a methane blizzard on Neptune are unlikely to impact the contents of the flask, but the temperature and pressure of the lab may.
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Greek delta
(________) means "change (or difference) in "and is computed as the result of subtracting the beginning state from the end state As a result, E is the total amount of energy released by the system minus the initial amount:
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Metal
________ wires facilitate the transmission of electrical energy.
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Solar energy
________ may be converted into food.
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clouds of smoke
The mechanism that drives the train down the track, following ________ behind it, involves both chemical and physical changes.
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Thermodynamics
study of energy and its changes
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Each particle in a sytem
possesses potential and kinetic energy, and the total of these energies is the system's internal energy, E (some sources use the symbol U)
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Change/difference in
ΔE = Final − Initial = Products − Reactants
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Heat
often known as thermal energy (symbolized by q), is the energy transmitted as a result of a temperature differential between the system and its surroundings
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Work
the energy transmitted when an item is moved by a force, is involved in all other kinds of energy transmission
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Flashcard (23)