Challenge: Problem 2

1 heat transfer takes energy from hotter to cooler systems 2 thermal capacity 3 isothermal change 4 a change in volume 5 transfer of energy by work, involves no change in entropy 6 latent heat 7 adiabatic change 8 a change in temperature 9 internal energy does not consist only of thermal energy 10 the internal energy periodically returns to its initial magnitude 11 conversion of work into heat production, as in the case of friction 12 a change in internal energy 13 absolute temperature-measure of the intensity of thermal energy 14 internal transition from potential to thermal energy 15 work output by system 16 a change in entropy 17 the lower the intensity at which a transfer of energy takes place, the greater the increase of its extension within the system 18 external stores of thermal energy 19 changing entropy of a system by heat transfer to a cooler system 20 the entropy associated with thermal energy at zero intensity