Please enable JavaScript.
Coggle requires JavaScript to display documents.
(Biomass 53% (U.S. Consumption) (Biofuels (biodiesel, Alcohol), cost (air…
Biomass 53% (U.S. Consumption)
Biofuels
biodiesel
Alcohol
Biopower
Benefits
cost
air pollution
inefficiency
Hydropower 36% (U.S. Consumption)
harnessing hydropower
Dams/rivers/oceans
Dams- water passes through the dam and turns the blades on a turbine, generating electricity
Using the natural flow of water, rivers turn the turbines used to generate electricity
Oceans
tidal dam at the mouth of the bay-once tides rise, the water goes through the dam, turning turbines
tidal dam at the mouth of a river
cost/benefits
they drastically change ecosystems, can kill animals
renewable
nothing is burned, so it is "clean"
quite expensive
Wind 5% (U.S. consumption)
cost/benefits/draw backs
does not cause pollution
cuts down on greenhouse gases
no control over wind
harnessing wind power
wind turbine- the wind turns a turbine that generates electricity
wind farms- large plots of land hold several wind turbines
offshore wind turbines
avg. wind speeds are 20% greater over water than land
higher cost
Geothermal 5% (U.S. consumption)
harnessing geothermal energy
steam from geysers
drill into the earth toward melted rocks and water
ground source heat pump
cost/benefits
replace fossil fuels
less air pollution
releases less greenhouse gasses
Solar 1% (U.S. Consumption)
solar heating
active solar heating- uses technology to collect, store, and move the heat from the sun
Passive solar heating- designing buildings to collect, store, and distribute the sun's energy
cost/benefits/drawbacks
endless source
technology uses no fuel
quiet and safe
can last 30 years
manufacture does create some pollution
ineffective in cloudy cities like Seatlle
Biomass 15.7% (U.S. Electricity Generation)
Wind 9.7% (U.S. Electricity Generation)
Hydropower 70.2% (U.S. electricity generation)
Geothermal 4.2% (U.S. Electricity generation)
Solar .2% (U.S. electricity generation)