ex2 flashcards
(29 cards)
made with the breakdown of plant sugars and other plant substances (wheat
sugar cane ethanol
comes from natural plant oils and fats
which can come from soybeans
made from methane
which comes from organic waste
Burned biomass converts _______ and produces _________ water
carbon dioxide
an anerobic (oxygen free) environment which allows for the breeding of bacteria landfill
landfill bacteria synthesizes into what main gasses methane and carbon dioxide
the 3 main types of ethanol sold in the US E10
E15
what is the other remaining percentage of ethanol made of gasoline
for every energy unit put in
you get energy put out energy gain output (Q)
If Q > 1
the system is producing _____ energy than it consumes — that’s a net energy _____. more
If Q = 1
it’s _____ - ______ break-even
If Q < 1
the system is _______ energy overall. losing
use Less oil
more waste and comes from non-food sources which makes it more sustainable
Ethanol has more _____ than octane oxygen
More ______ = a more efficient burn oxygen
contains some sulfir
as well as some nitrous oxide which contributes to air pollution and acid rain petrodiesel
Unified system of generators
transmission and distribution lines that work together to power an area electric power grid
Which mathmatic equation defines the relationship between voltage
current
Since 1901
what are the four purposes for which the government has built dams? irrigation
Dams disrupt natural flow patterns by causing ______ _______ in a rivers path high swings (curves)
large amounts of water taken to other areas diversions
What are two measurable characteristics of rivers that are negatively impacted by dams? natural flow patterns
diversions
allows for habitat for sea creators
such as coral reefs
It also allows for sea creatures to repopulate by spreading nutrients across the area seasonal flooding
