HYDROELECTRIC ENERGY Mia STastny and kylie Smith

We have used running water as an energy source for thousands of years. In 1882 on the Fox river, in the USA, hydroelectricity produced enough power to light two paper mills and a house. Nowadays there are many hydro-electric power stations, providing around 20% of the world's electricity. The name hydroelectricity comes from " Hydro" the Greek word for water.

The cycle of Hydroelectricity

HOW IT WORKS

Hydro-electric power stations can produce a great deal of power very cheaply. A dam is built to trap water, usually in a valley where there is an existing lake. Water is allowed to flow through tunnels in the dam, to turn turbines and thus drive generators.

Hydro-electric Power Station
  1. In many ways Hydroelectricity is beneficial and safe for the environment. No waste or pollution produced in the process,
  2. Much more reliable than wind, solar, and wave power.
  3. Hydro-electric Power Stations can increase to full power very quickly, electricity can be generated constantly at these Stations.
Wind, Solar and Wave Power
  1. The dams are very expensive to build. However, many dams are also used for multiple reasons, like flood control, or irrigation. So building cost can be shared among different companies.
  2. Finding a suitable sight can be difficult. The impact of residents and the environmental abilities. (Unacceptable or acceptable land)
  3. Water Quality and Quantity downstream can be affected, which can affects/ impacts plant life
Renewable OR Nonrenewable

Hydroelectricity is in fact Renewable, The sun provides the water by evaporation from the sea, and it will keep on doing so, therefore it is a renewable energy.

  1. To sum it all up, Hydro-electric power means getting energy from flowing water, and
  2. It is a renewable energy, It will never run out
  3. It is expensive to build.
  4. Usually build a dam and let the water turn the turbines and generators as it goes through pipes in the dams.
  5. And the sun provides the water by evaporation.
  1. The largest hydroelectric power station in the world is the "Three Gorges Dams in China
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  9. http://www.darvill.clara.net/altenerg/
  10. "Hydropower Facts - Creating Electricity with Water & Gravity. "Hydropower Facts- Creating Electricity with Water & Gravity. N.p., n.d. Wed. 22 Feb. 2017.
  11. http://www.tvakids.com/electricity/hydro.htm

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