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Polymer fibers
________ in winter clothes, for example, impede the transfer of heat energy away from the body.
Natural gas
________ and oil, for example, release energy that we use to cook our food, heat our houses, and power our cars.
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.
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:
Metal
________ wires facilitate the transmission of electrical energy.
Solar energy
________ may be converted into food.
clouds of smoke
The mechanism that drives the train down the track, following ________ behind it, involves both chemical and physical changes.
thermal energy
Heat, often known as ________ (symbolized by q), is the energy transmitted as a result of a temperature differential between the system and its surroundings.
Note 
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