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Presentation on theme: "HYDROPOWER COLLIN KELLY, ANGELA CICERO, JOHN MCLAUGHLIN Your source of never- ending power!"— Presentation transcript:



3  Hydroelectricity is produced at hydroelectric power plants  Dams are built around the hydroelectric power plants, which stop the flow of water and hold back thousands of tons of water in certain places.  A power source, which is the water, turns a turbine, which then turns a metal shaft in a electric generator. The electric generator is a “motor that produces electricity.” Then the electricity is moved to homes and businesses. That is how hydroelectricity is produced.

4 HOW IT IS USED!!!!!! 1.Hydroelectric power is used to produce electricity. 2.The force of water is converted into mechanical energy. 3.The water that is held behind a dam has lots of potential energy, which is converted into kinetic energy. 4.Hydroelectric power is one of the oldest ways of producing energy. 5.Hydropower is a very efficient way of making energy. 6.When hydropower is made, there is very little to none pollution made.

5 ADVANTAGES!!!!!! 1.The fuel used in hydroelectricity is not burned, so it cause very little pollution. 2.Hydropower is a renewable source of energy, so as long as there is water hydropower can be used. 3.The water that is not used, can be saved and used when energy is needed. 4.Hydropower is water power. So wherever a hydroelectric power plant is located, it can be used for irrigation purposes. 5.The water that is held back behind a dam, can be used as a pool or a swimming area. 6.The hydroelectric generators that make hydropower are very reliable and can be used for many decades. 7.Hydropower is practically free because after a dam is built and the electric generators are made, the water that it uses is FREE!

6 DISADVANTAGES!!!!! 1.The dams that are needed to make it cost a lot of money and are very complicated. 2.When dams are built, the water that they stop can consume land that was originally higher than where the water was. Which can affect thousands of people. 3.The building of these large dams can affect the original flow of the river and can cause water to not reach certain places. 4.A dam can split a river into two parts which causes fish to not be able to migrate and not have the freedom that they had. 5.If a dam is not built properly and breaks, it can kill many people affect the wildlife around that area. 6.Dams are very expensive and can affect the wildlife around the area greatly.

7 THE U.S. AND HYDROPOWER!!!!!!!! The first hydroelectric power plant in the U.S opened on the fox river near Appleton Wisconsin on September 30 th 1882 In the U.S. about 7% of the total power comes from hydroelectric plants. Washington produces nearly 31% of the hydropower in the U.S The largest hydroelectric power plant is the Grand Coulee Dam in Washington Right now power plants in the U.S can generate enough hydropower to power 28 million homes. Fox River Dam- Hoover Dam-

8 THE HOOVER DAM!!!!!!!!! 1.The Hoover Dam is 726.4 feet high. 2.It is 1,244 feet across the top. 3.It weighs 6.6 million tons.(13,200,000,000 pounds) 4.Cost $49,000,000 to build. 5.It is 660 feet thick at bottom. 6.Can generate 2.8 million kilowatts. 7.It has 17 generators that can produce over 2,000 megawatts of electricity.

9 THE THREE GORGES DAM!!!!!!!!! 1.It is located in Sandouping, Yichang. 2.It is 181 meters tall. 3.It cost 24.65 billion dollars, in U.S. currency. 4.It can generate 18.2 million kilowatts. 5.It is being built to control flooding, generate power, and improve navigation. 6.There is 26 generators inside of it. 7.It is the world’s biggest dam.

10 One fact that we learned from this video, is that dams are used to produce hydroelectricity, make clean drinking water, make water deep enough for ships, and for irrigation purposes. Another fact is that rivers with a “heavy” flow, can be harnessed to produce hydroelectricity. BRAIN POP!!!!!!!!!!!!!!!

11 PARTS OF A DAM!!!!! Reservoir- a manmade lake formed from the water that a dam holds back behind it Intake- where the water enters a dam; Most will have screens to prevent anything from entering the penstock, which could break the turbine Penstock- an open shaft inside a dam that allows water to flow from the intake to the outflow Outflow- water that has been used flows through the outflow back into the river or lake

12 PARTS OF A DAM CONTINUED!!!!!!!! Turbine- Water turns the turbine, which is attached to a generator Generator- AC is produced inside of generators when a turbine turns and a series of magnets inside the generators turns with it Transformer- It takes the AC produced and turns it into a higher-voltage current

13 FUN FACTS!!!! AND SUMMARY!!!!! Hydropower is a renewable source of energy, and it can be used as long as there is water. Hydropower does not cause any pollution, and water is more efficient than other natural resource. The Three Gorges Dam is the biggest dam in the world. It is the most widely used renewable source of energy. A reservoir is the body of water formed behind a dam. China has been the leading producer of hydroelectricity in the world.

14 MORE FUN FACTS!!!!!! Hydroelectricity helps fight against climate changes because it does not produce green house gas emissions. Hydroelectric power plants are a lot safer than nuclear power plants. Reservoirs can hold water needed for hydropower incase there is a drought. China, Canada, Brazil, Russia, and the United States are the five leading producers of hydropower. Hydropower

15 BIBLIOGRAPHY!!!!!! 1.Ryan, V. "Advantages and Disadvantages of Hydropower." www. 2005. Web. 9 Mar. 2012.. 2."Hydropower Advantages - Clean and Reliable Alternative Energy." Alternative- 2005. Web. 7 Mar. 2012.. 3.Perlman, Howard. "Hydroelectric Power Water Use." Web. 7 Mar. 2012.. 4."Hydroelectric Pros And Cons." 19 May 2010. Web. 14 Mar. 2012.. 5."Hydropower." Web. 14 Mar. 2012..

16 POP QUIZ!!!!!!!! 1.What type of renewable energy was this power point on? 2.What is the biggest dam in the world? 3.Which state produces the most amount of hydropower and what is the percent? 4.What is a reservoir? 5.What is one fact you learned during this presentation, other than the questions just asked?

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