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Transcript of Hydroelectric Energy
Brazil, China, USA, and Russia are one of the many countries that uses hydroelectricity. Over 200 countries use hydroelectricity, and some countries are fully or mostly relied on it. Hydropower is the most used energy source in the world. A type of technology that will utilize hydroelectric energy is a Pumped-storage Hydroelectricity which is a type of power generator. Hydroelectricity has been around for ages, and it will continue to be around for many more years. It is one of the best renewable sources. In order for us to make it into a better source for everyone, we have to avoid or solve all the problems that it brings us.
Hydroelectricity is one of the many sources that we should be thankful about! Hydropower is a renewable source. About 71% of Earth is covered in water and it is very unlikely for us to run out of this source because our water cycle recycles itself continuously. You can still produce a good amount of energy with a very slow flow of water or a moderate sea swell because water is 800 times denser than air. Renewable Energy In Greek, the word ‘hydro’ means water, meaning hydroelectricity comes from any water source. Oceans, rivers, lakes and dams are example of some water sources. It can come from tidal movements, flowing streams, dammed rivers and ocean waves. Electricity generated by Hydroelectricity In a river, a dam is created which stores a lot of water in its reservoir. The water falls through the penstock into a turbine propeller and the moving water turns the turbine. Inside the generator there is a roader turned by the turbine, which produces the power. The electrical charges change into usable electricity. This video will help you understand the process Hydropower has been around for about 2000 years. It was originally used to grind wheat and was also used for many other work. Water was the main power source before any other industries were invented. It was used for milling lumber and grain, and powering small machinery. The generator was created in the 19th century and in 1878 the first hydroelectric power was created. By the 20th century, it was one of the most popular and renewable source of all time. Advantages: Disadvantages: Is Hydroelectricity beneficial to us in the future? -Renewable
-Contributes to the storage of drinking water
-Requires low maintenance
-Helps fight climate change Yes! It is very beneficial to us in the future because we need more renewable sources like hydroelectricity, or we could end up harming our environment by using non-renewable sources. -Large spacing
-Ecosystem damages/disturbance of habitats
-Cost to build the dam
-Emission of methane and CO2
-Effects on agriculture This picture will help you understand how it works.. Is it an environmentally sustainable technology? Creating any power generator can effect the environment. In this case, the pumped storage plant may be harmful to the habitat. So no, this is probably not a technology that is environmentally sustainable. Thank you for watching! The End Citations Wikipedia.- http://en.wikipedia.org/wiki/Hydroelectricity Hydroelectricity: Hydropower: http://en.wikipedia.org/wiki/Hydropower Renewable Energy: http://en.wikipedia.org/wiki/Renewable_energy National Geographic Education - Hydroelectric Energy: http://education.nationalgeographic.com/education/encyclopedia/hydroelectric-energy/?ar_a=1 USGS - http://ga.water.usgs.gov/edu/hyhowworks.html Pictures Google images - http://www.google.ca/imghp?hl=en&tab=wi Video Youtube- How Hydroelectricity Works: http://www.youtube.com/watch?v=rnPEtwQtmGQ- (Remove - at the end)