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Alternative Energy

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by

Brendan Keeley

on 4 May 2010

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Transcript of Alternative Energy

Alternative Energy Solar Power Pros
-Available everywhere
-Renewable
-Non-polluting Cons
-Expensive
-no energy at night or on cloudy days
-takes a large area to produce the amount of energy needed
Wind Energy Pros
-Renewable
-Non-polluting
Cons
-Wind strength is an unreliable
energy source.
-The equipment is also very expensive
Hydroelectric Pros
-Renewable
-Allows for flood control
-Creates resevoirs Cons
-Dams are expensive
-Damages the ecosystem
-Blocks fish migration
-Also it floods a large area of land Wave Energy Pros
-Non-polluting
-Renewable
-Constant/reliable Cons
-Its expensive
-limited area of use(oceans)
-Enviremental and marine safety issues -Fossil fuels are a non-renewable energy source.
-They are depleating at a fast rate.
-Fossil feuls also give off greenhouse gasses.
-High fuel prices why its an issue Pros and cons of alternative energy sources
(Reasons for their use as well as against) Ethanol Pros
-Renewable
-Alternative for gasoline
-Emits less admissions then gas

Cons
-Uses food crops
-Takes more energy to make then it produces
-It does not transport well
-still pollutes "Currently, the United States consumes 19.6 million barrels per day, of oil, which is more than 25% of the world's total. As a result, the U.S pruduces one fourth of the world's carbon emissions. Despite predictions that the U.S will exhaust its supply of oil in as little as forty years, the demand is on the increase, and is predicted to continue increasing, because of the increasing population." Background
Full transcript