8+Science+1+Group+2+Public+Service+Announcement

Bibliography


 * 1) 1) Arms, Karen. //Environmental Science.// Austin, Texas; Holt, 2008.


 * 1) 2) __Hydroelectric Power Water Use__. 19 Oct, 2009.


 * 1) 3) __Hydroeletric Power.__ July, 2005

There are many energy sources that harm our environment such as coal, minerals, and oil, which are fossil fuels that give off tons of particulate matter and pollutants into the atmosphere. They release harmful toxins including carbon dioxide, sulfur dioxides, and many more. These toxins pollute our atmosphere and are also unhealthy for humans, causing many effects such as emphysema, lung cancer, and eye irritation. What is a resource we can use that reduces these harmful emissions, but can also increase electricity production?
 * Iss****ue:**

Well, the answer is to use hydro electricity. Why use harmful energy sources if we can use an energy source that is good for our environment and can create energy in a sustainable way? Hydroelectricity is the perfect solution because not only is it a renewable resource, but fuel is not burned during the process, so there is minimal pollution. Hydroelectricity is electricity produced by hydropower. It uses water to run the power plant, which is provided free by nature. Hydropower plays a major role in reducing greenhouse emissions because it doesn't produce any greenhouse gases, slowing the rate of global warming. Now a days, huge power generators are placed inside dams, as shown in the picture above. The turbine blades, made out of metal, spins the water flowing through the dams. The turbine is connected to generators, and the energy is then sent to homes and businesses, providing electricity. Hydropower is the most important and widely-used renewable resource, representing 19% of total electricity production. Some more benefits of hydroelectricity is that it has relatively low operations and maintenance costs. The technology is also reliable and proven over time. Another benefit is that all that is needed for the power generators is water, which is a renewable source, meaning that the rainfall renews the water in the reservoir, so fuel is always there. The only disadvantages to using hydroelectricity is that it is dependent on hydrology. On the downside, if there is a drought, the generator can not produce enough energy because there is not enough water. That is why you must chose a good spot, where it's not very populated. The best place to build hydroelectric power plants are in swift-flowing rivers or streams, mountainous regions, and areas with heavy rainfalls. We need to use hydroelectricity as an alternative resource because it is clean, renewable, and earth friendly. So put the earth first and use hydroelectricity!
 * Solution, Benefits, and Evidence:**