history in energy in the US shows an increase in these two things?
1. total consumption 2. Increasing diversity of energy sources
newer energy sources were previously unavailable but now are because
of technological break throughs
Increasing energy consumption is due to these to things
1. increasing population 2. increasing energy intensity (consumption per capita)
from 1949 to 2000 there was this % change in total energy consumption (in u.s.)
208 increase
6 benefits of increased energy intensity

1.synonymous for development 2. supports technological innovations 3. faster wider spread communication 4. faster more voluminous transportation 6. Supports a larger human population 7. supports a human population longer


development tech innovations communication transportation population population longer

____ quads of primary energy consumption in the U.s. 2009
Primary energy sources
fossil fuels, hydropower, nuclear energy, wind energy etc.
primary energy source
energy stored within; can be extracted to do useful work
secondary energy sources
electricity and an energy carrier
almost any primary energy source can be converted into
what tool converts primary energy into secondary?
coal can be _______ or _______ but it is expensive
liquified or gasified
energy transformations are
38.19 quads of primary energy converts to ____ quads secondary
____% of energy is lost when converting primary to secondary energy
most versatile form of energy
electricity is
easily transformed and converted back into heat motion light etc. (never see electric airplane
most energy dense form of energy
nuclear energy
most transportable form of dense energy
liquid fossil fuels
most abundant fossil fuel