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Knowing Alternative Energies |
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by Rock Lee | 29-12-2017 17:47
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Hello fellow friends! Well, it is a kind of late but Merry Christmas and Happy New Year 2018! So, today I?m going to talk about ?alternative energy?. Until now, human relied on fossil fuels that didn?t stop coming out from Earth. But, now it is starting not to come out. There are three types of fossil fuels which can all be used for energy provision which are coal, oil and natural gas. Fossil fuel made our life comfortable. We can use electricity as we want, technology has developed thanks to fossil fuel. But, there are lots of cons too. Fossil fuels generally consist of carbon. When we burn fossil fuel, carbon and all these toxic chemicals go up to the Ozone layer that protects our Earth from the strong radiation of the sun. These chemicals destroy the Ozone, and that?s why Earth?s temperature is increasing and ?Global Warming?. They?re also unsustainable. Luckily, these days sustainable energies are being used actively in this world. Next, I?ll introduce some of the most popular alternative energies. At first, Wind power. Wind energy is made when the turbine blades rotate. While rotation, they convert into electricity. Long ago, wind towers/mills were only used for different reasons such as pumping water, crushing grains. Second, Solar power. When the radiation/ray of the sun reaches to the solar cells in the solar panel, they convert to electricity. It?s mostly used for heating, cooking. There are lots of inventions related with using the ray or heat of the sun. At the third, Hydroelectric energy. Almost 70% of water surround the Earth. Why don?t we use them by alternative energy? Using the water?s tidal power, kinetic energy they convert it into electricity which is very interesting. Also, water that was used for making electricity can be reused. These alternative energies may have cons, but most people are pursuing these ideas. They think that they would rather use these alternative energies to earn electricity and stop one of the reasons why global warming is happening. We have to work out to stop these reasons so global warming will harm us no more.
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4 Comments
Thanks for commenting Elizaveta!
Posted 01-01-2018 22:35
Thanks you for commenting and giving me advice Stephanie Mentor! Happy New Year for you!
Posted 01-01-2018 22:34
Dear Rock! Thank you for your report!
Posted 01-01-2018 21:22
Hi, Rock! I see that you've provided a nice summary of why we primarily use fossil fuels, why they are bad for the environment, and what types of alternative energy can be used in place of them. I think it would have been better to include the effect of greenhouse cases in your explanation of the cons of fossil fuels :) It's true that the gases produced in the combustion of fossil fuels can lead to global warming, but this is not solely due to the destruction of the ozone layer. Another main cause is the effect of greenhouse gases (such as carbon dioxide or methane) absorbing heat. Overall, great overview!
Posted 30-12-2017 12:54