Benchmark
8C
The Designed World: Energy Sources and Use
Grades 6-8, page 194
Energy can change from one form to another, although in the process
some energy is always converted to heat. Some systems transform energy
with less loss of heat than others.
NSES Content Standard B
Physical Science: Transfer of energy
Grades 5-8, page 155
In most chemical and nuclear reactions, energy is transferred into
or out of a system. Heat, light, mechanical motion, or electricity might
all be involved in such transfers.
NSES Content Standard B
Physical Science: Conservation of energy and the increase in disorder
Grades 9-12, page 180
Everything tends to become less organized and less orderly over time.
Thus, in all energy transfers, the overall effect is that energy is spread
out uniformly. Examples are the transfer of energy from hotter to cooler
objects by conduction, radiation, or convection and the warming of our
surroundings when we burn fuels.
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