chap 12+13 Flashcards
1
Q
examples of fossil fuels
A
coal, oil, natural gas
2
Q
in what environments are fossil fuels created
A
anearobic environments, without oxygen (decomposers cannot break down fast enough, buildup of detritus in places like swamps, river deltas, ocean floor)
3
Q
subsistence vs commercial energy sources
A
subsistence is stuff collected for a person’s own usage whereas commercial energy sources are bought/sold
4
Q
trends/transitions in fuel usage in US
A
wood –> coal and then later oil and natural gas added. order of importance now is oil, natural gas, coal (natural gas up bc of fracking.
5
Q
which sector uses the most energy
A
industry, then transportation
6
Q
why do we use gas in cars?
A
best energy to mass ratio
