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Transcript of Hydroelectric Power.
basic energy needs such as lighting our
homes, powering our appliances, and can
power our electronics. How can hydroelectricity be easily renewed? Hydroelectricity is among the most
renewable resources because it harnesses
it's energy from the water. It harnesses it's energy from rivers in
fact, so as long as rivers keep flowing
hydroelectric plants will keep producing
electricity. What is the cost of using hydroelectricity? The main cost of using hydroelectricity is
building the dams that create it. As you can see these things are
pretty huge and it also takes a lot of
man power to block a whole river. This makes
dams multi-million dollar projects and they
also take years to build. Once this obstacle is overcome
Hydroelectricity is basically free as long
as the river flows. What are the positive aspects of hydroelectricity? The main draw of hydroelectricity is that
once a plant is established the electricity it produces
is basically free. The production of hydroelectricity can also be slowed or sped up to keep up with demands. dams also create giant reservoirs of water
which can then be used for recreational activities such as boating or fishing. Does hydroelectricity have negative aspects? Although it may seem like a flawless
form of energy, hydroelectricity does have
it's drawbacks. Hydroelectricity's biggest problem is that dams disrupt the landscape and ecosystem in various ways. Dams create huge deposits of water which can displace or kill wildlife. These deposits can also flood whole
communities forcing thousands of people
to have to move somewhere else. The science of hydroelectricity. What hydroelectricity basically boils
down to is harnessing the energy of moving water. How is energy gathered? Water flows through a dam. This water is
forced through a turbine which spins generator
which in turn generates electricity. How is energy stored for later use. Water for the production of electricity
can be stored in a reservoir. What are the waste products of hydroelectricity? Hydroelectricity produces no harmful waste
products, just water. What is keeping hydroelectricity from widespread use? The most obvious reason is that you need a suitable
location to build a dam and not a lot of places have that. Another big issue is the cost of building a hydroelectric dam. Even though it provides free energy the upfront cost of building one can be too much. When is hydroelectricity expected to be available to
the general public? Out of all alternative forms of energy
hydroelectricity is the most widely used.
Hydro power accounts for approximately 1/5
of the world's energy consumption. Sources "Hydroelectric Energy." - National Geographic Education. N.p., n.d. Web. 30 Oct. 2012. <http://education.nationalgeographic.com/education/encyclopedia/hydroelectric-energy/?ar_a=4>. "What Are the Negative Effects of Building Large Hydroelectric Dams?" Brighthub Engineering. N.p., n.d. Web. 30 Oct. 2012. <http://www.brighthubengineering.com/geotechnical-engineering/71200-negative-impacts-of-hydroelectric-dams/>. "How Hydropower Plants Work." HowStuffWorks. N.p., n.d. Web. 30 Oct. 2012. <http://science.howstuffworks.com/environmental/energy/hydropower-plant.htm>. "The Future of Hydropower." - IEEE Spectrum. N.p., n.d. Web. 30 Oct. 2012. <http://spectrum.ieee.org/energy/renewables/future-of-hydropower>.