Renewable And Non Renewable Energy Sources Environmental Sciences Essay

Renewable And Non Renewable Energy Sources Environmental Sciences Essay We can not use our feet to power our cars like the flinstones. So, how do cars move around? Energy! what is energy? energy is the ability to do work. All living things need energy to grow, plants use light from the sun to grow, also light is a type of energy we use all the time, we get most of the light from the sun, but at night we make our own light using another energy source known as electricity. Energy makes things move, cars run on the energy stored in gasoline sail boats are pushed by the energy in the wind. It takes energy to run our televisions, computers, and video games in the form of electricity, we use electricity all day long, it gives us light and heat, it makes things operate. After a long day dont you feel too tired to move? Well you have ran out of energy, you need some food to refuel. Imagine what your life would be without electricity?! There are two main types of energy; renewable and non-renewable, basically Most of the energy we use comes from fossil fuels, such as coal, natural gas and petroleum. Uranium is another nonrenewable source, but it is not a fossil fuel. Uranium is converted to a fuel and used in nuclear power plants. Once these natural resources are used up, they are gone forever. The process of gathering these fuels can be harmful to the biomes from which they come. Fossil fuels are put through a process called combustion in order to produce energy. Combustion releases pollution, such as carbon monoxide and sulfur dioxide, which may contribute to acid rain and global warming. Other than Renewable sources of energy can be used over and over again. Renewable resources include solar energy, wind, geothermal energy, biomass and hydropower. They generate much less pollution, both in gathering and production, than nonrenewable sources. But it is believed that petroleum in particular will not be depleted as it is generated in the deep sedimentary basins even if it will take thousands of years but it will be generated and petroleum will still be one of main and important sources of energy and the source upon which countries economies depend on, in the following report we will try to identify different energy sources available in the world. Scientific Background Renewable energy is defined () to be those energy source which do not deplete. They are basically natural sources of energy like sun, wind, -whereas nonren renewable energy sources : renewable energy sources are the sources which when used will not be depleted from the world. Data survey The following section will demonstrate various examples from around the world to show energy sources uses and applications. The first example is from (http://www.renewable-energy-sources.com/) SMA Expands North American Utility-Scale PV Inverter Line    Sunny Central 500HE and 630HE Ideal for Medium Voltage Connection SMA America LLC, the U.S.-based subsidiary of global solar technology leader SMA Solar Technology AG, has expanded its U.S. line of utility products with the Sunny Central High Efficiency (HE) line of solar inverters. The new 500 and 630 kilowatt inverters provide integrators Abengoa Solar Reaches Total of 193 Megawatts Operating Abengoa Solars third parabolic trough solar power plant, Solnova 4, successfully passed its three day production and operation tests. UNI-SOLAR Power Tilt(TM) Solar Roof System Featured on German DIY Retail Store    Innovative Solar Roofing System Gaining Traction in European Markets United Solar, a leading global manufacturer of building-integrated and rooftop photovoltaics under its UNI-SOLAR ® brand and a wholly owned subsidiary of Energy Conversion Devices (Nasdaq:ENER) announced that its innovative PowerTiltà ¢Ã¢â‚¬Å¾Ã‚ ¢ solar roof system was recently installed at Hagebaumarkt, a German DIY retail franchise Centro solar Presents New 54-cell PV Panel with up to 225 Wp output at the EUPVSEC Premium solar module achieves higher output thanks to novel cell matrix CENTROSOLAR AG is showing the new 54-cell module with increased output at the European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC) from September 6 10 in Valencia, Spain REpower Launches First Wind Farm with System Certificate in line with German System Service Ordinance (SDLWindV) Kronprinzenkoog wind farm one of the biggest repowering projects in Northern Germany Total wind farm output increased from 12.3 MW to 30.75 MW Hamburg, 2 August 2010. REpower Systems AG (WKN 617703) has launched a wind farm project in the district of Dithmarschen (Schleswig-Holstein) with Repowering Kronprinzenkoog GbR Non-renewable energy sources: non-renewable energy sources are the sources which when used will be depleted from our world and then we will have to find alternative sources. Data survey The following section will also demonstrate various examples of non renewable energy sources extracted from (http://www.lshc.co.uk/downloads/Nonrenewable.pdf), such as: 1-fossil fuels: Fossil fuels are compounds made from the chemical elements carbon and hydrogen. Fossil fuels formed millions of years ago, during the Carboniferous Period, from the remains of plants and animals. As the plants and animals that inhabited the swamps died, they were buried under sand and mud which stopped them from decaying. Over time, more sediments covered the remains and pressure, together with heat, turned them into coal, oil and natural gas deposits. Today, fossil fuels are used in power stations to generate electricity. Natural gas is also commonly used in homes to cook food and heat water, and compressed natural gas can power specially designed vehicles. Oil is the main source of power for vehicles, in the form of petrol or diesel. 74% of the UKs electricity is generated à ¢Ã¢â€š ¬Ã‚ ¢ from fossil fuels. Most of the worlds oil (13%) comes from à ¢Ã¢â€š ¬Ã‚ ¢ Saudi Arabia. Russia is the main producer of natural à ¢Ã¢â€š ¬Ã‚ ¢ gas, extracting nearly 22% of the total produced each year. The UK is 5th with 3.2%. China leads the way in coal production, à ¢Ã¢â€š ¬Ã‚ ¢ mining 38% of the worlds coal. 2-Nuclear power In most electric power plants, water is heated and converted into steam, which drives a turbine-generator to produce electricity. Fossil-fueled power plants produce heat by burning coal, oil, or natural gas. In a  nuclear power plant, the  fission of uranium atoms  in the reactor provides the heat to produce steam for generating electricity. Several commercial reactor designs are currently in use in the United States. The most widely used design consists of a heavy steel pressure vessel surrounding a reactor core. Thereactor core  contains the uranium fuel, which is formed into cylindrical ceramic pellets and sealed in long metal tubes called  fuel rods. Thousands of fuel rods form the reactor core. Heat is produced in a nuclear reactor when neutrons strike uranium atoms, causing them to split in a continuous chain reaction.  Control rods, which are made of a material such as boron that absorbs neutrons, are placed among the fuel assemblies. When the neutron-absorbing control rods are pulled out of the core, more neutrons become available for fission and the chain reaction speeds up, producing more heat. When they are inserted into the core, fewer neutrons are available for fission, and the chain reaction slows or stops, reducing the heat generated. Heat is removed from the reactor core area by water flowing through it in a closed pressurized loop. The heat is transferred to a second water loop through a heat exchanger. The water also serves to slow down, or moderate the neutrons which is necessary for sustaining the fission reactions. The second loop is kept at a lower pressure, allowing the water to boil and create steam, which is used to power the turbine-generator and produce electricity. Originally, nuclear energy was expected to be a clean and cheap source of energy. Nuclear fission does not produce atmospheric pollution or greenhouse gases and it proponents expected that nuclear energy would be cheaper and last longer than fossil fuels. Unfortunately, because of construction cost overruns, poor management, and numerous regulations, nuclear power ended up being much more expensive than predicted. The nuclear accidents at Three Mile Island in Pennsylvania and the Chernobyl Nuclear Plant in the Ukraine raised concerns about the safety of nuclear power. Furthermore, the problem of safely disposing spent nuclear fuel remains unresolved. The United States has not built a new nuclear facility in over twenty years, but with continued energy crises across the country that situation may change. 19% of the UKs electricity comes from à ¢Ã¢â€š ¬Ã‚ ¢ nuclear power (http://cnx.org/content/m16730/latest/) 3-Coal At the present rate of use, the known coal supplies will last about 300 years and oil may not last for more than about 50 years. A great deal of fossil fuel is burnt in power stations. The coal is burnt to boil water which in turn produces steam. The steam drives the fans of a large turbine (a very big dynamo) which then generates electricity. The electric current is transported to our houses by large power cables. The whole process is an example of how energy is transformed from chemical energy to heat energy to  kinetic energy and then finally to electrical energy. Figure (1) Problems with non-renewable energy The main source of energy today is fossil fuel. However, there are two main problems associated with this type of fuel: the limited availability of fossil fuels and climate change. There are also safety concerns linked to the use of nuclear power and the radiation that is produced. Limited availability of fossil fuels Fossil fuels are non-renewable sources of energy, so they could one day run out. Alternative sources of energy are needed. As supplies decrease, the cost of buying fossil fuels may increase causing economic problems as well Climate change When fossil fuels are burnt they produce the gas carbon dioxide (CO2). Carbon dioxide is known as a greenhouse gas because it traps heat from the sun, much like the glass in a greenhouse, preventing it from escaping out of the Earths atmosphere into space. Greenhouse gases are found naturally in the atmosphere and they are essential for keeping the Earth warm. However, through the activities of humans, mainly as a result of burning fossil fuels, the amount of these gases in the atmosphere is increasing. As a result, global warming is occurring as the temperature of the Earth rises. Global warming is leading to climate change.à ¢Ã¢â€š ¬Ã‚ ¢ Polar ice-caps are melting, causing a rise in à ¢Ã¢â€š ¬Ã‚ ¢ sea level around the world. Rainfall patterns are changing and extreme à ¢Ã¢â€š ¬Ã‚ ¢ weather events, such as hurricanes and droughts, are more frequent in some parts of the world. The UK is one of 170 countries that have à ¢Ã¢â€š ¬Ã‚ ¢ signed an agreement called the Kyoto Protocol, which sets out targets for reducing CO2 emissions. There are also some environmental problems with fossil fuels such as: oil Spills Oil has to be transported from oil fields to where it is needed. Oil tankers, which can carry many tens of thousands of tons of oil, are regularly used to transport the oil. Unfortunately, accidents can and do happen and the oil spills that result from these accidents have caused some major environmental headaches. Local birds, fish and animals such as sea otters and seals are very vulnerable to oil spills. Although the immediate damage can often seem horrific, with the help of careful human clean-up operations and with natural processes that help clean the environment, the marine ecosystem can usually recover well. Figure(2) Acid Rain When coal burns, it produces gases like carbon dioxide, which are then released into the atmosphere. Other harmful gases produced by coal burning are sulphur dioxide and some nitrogen oxides. These dissolve in the water in the atmosphere to create weak solutions of sulphuric acid and nitric acid, which can then return to Earth as acid rain. Unfortunately many trees and plants cannot thrive when the water they need is acidic like this and large areas of forest can be affected. In the worst cases the vegetation may be killed. conclusion In the end we must understand how energy is something we can not make do without as without energy there is no life. As for some harmful energy sources then we have to find and start looking for alternative energy sources which are clean and non harmful, we should also start to depend on renewable energy sources as we know that they will not be all depleted in the future.

Burning Up

ALWAYS, SOMETIMES, OR NEVER Chapter 9 Tell whether each statement is always, sometimes, or never true. 1. The graph of a quadratic function is a straight line. 2. The range of a quadratic function is the set of all real numbers. 3. The highest power in a quadratic function is 2. 4. The graph of a quadratic function contains the point (0, 0). 5. The vertex of a parabola occurs at the minimum value of the function. 6. The graph of a quadratic function that has a minimum opens upward. 7. The graphs of f(x) = ax2 and gx= -ax2 have the same width. 8. The function fx= ax2+c has three zeros. 9.The graph of y= ax2+1 has its vertex at the origin. 10. The graph of y = -x2+c intersects the x-axis. 11. There are two solutions to x2=n when n is positive. 12. If n is a rational number, then the solution to x2=n are rational numbers. 13. If the graph of a quadratic function has its vertex at the origin, then the related quadratic equation has exactly one solution. 14. If the graph of a quadratic fu nction opens upward, then the related quadratic equation has two solutions. 15. If the graph of a quadratic function has its vertex on the x-axis, then the related quadratic equation has exactly one solution. 6. If the graph of a quadratic function has its vertex in the first quadrant, then the related quadratic equation has two solutions. 17. A quadratic equation in the form ax2 – c = 0, where a 0 has two solutions. 18. If a quadratic equation has two solutions, then it has two x-intercepts. 19. If the discriminant is equal to zero the quadratic equation has no real solutions. 20. If the leading coefficient of a quadratic equation is positive and the graph of the equation has a positive y-intercept, the graph has two real solutions.

Analysis of “Mother Tongue” by Amy Tan: DRAFT Essay

Mother Tongue is about the authors struggles with her linguistic identity, her mothers â€Å"fractured† or â€Å"broken† variation of english and the relationship with her mother. At the beginning of the piece we are told about the different types of english she would speak with her mother and with everyone else; we are then told how english wasn’t Amy’s strongest subject and later on we are told about the difficulties her mother experienced because of the way she spoke english and the prejudice she faced. In the text Tan uses a variety of stylistic devices to express herself, tans use of parallel structures is used frequently throughout the piece, for example she starts the first paragraph with the phrase â€Å"i am not a scholar of english† and the second with â€Å"i am a writer†; this contrast implies to the audience that you don’t have to know everything about english to be a writer. She also uses personification in the second paragraph when she says † language is the tool of my trade†. This might suggest that the use of language through writing is the way she expresses herself or gets her point across. She then goes onto saying † And i use them all- all the Englishes i grew up with† and in the next paragraph she says â€Å"Recently, i was made keenly aware of the different Englishes i do use.† She uses repetition in this instance to emphasize how, in her opinion, there is no right way or one way of speaking english there are different variations, in this instance the English with her mother is very different from how she speaks english to her teachers or classmates, this can refer back to the title of the text â€Å"mother tongue†. Mother tongue is usually reffered to the first language a person is taught, however i think Tans use of the word mother tongue is much more intimate in a sense that she feels that her english or her mother tongue is unique to her, and that the variation of english she speaks to her mother is her mother tongue. Moreover she also uses repition when she uses the words â€Å"broken†, â€Å"fractured† and â€Å"limited† as it is shown numerous times throughout the text, these words suggest what other people may view of her mothers english, however Tans use of an antithesis when she uses the phrase â€Å"impeccable broken english† really grasps the readers attention, as the concept of something being broken but yet impeccable is very strange. This phrase may imply that although Tans mothers english might be â€Å"limited†, but  in her opinion it does not strike her as being wrong as so many would think; she clearly states this when she says â€Å"Some say they understand none of it, as if she were speaking pure Chinese. But to me, my mothers English is perfectly clear, perfectly natural†. Moreover She uses personification again to emphasize the variation of English she speaks when she says â€Å"the intersection of memory upon imagination†. Towards the fifth paragraph Amy uses many anecdotes or personal experiences to give the audience a bit more of an insight with the troubles she faced when she was younger with her mother and the prejudice she faced. Furthermore Amys use of dialogue throughout the text lets the audience experience her mother tongue. I think that the main purpose of this article is to show people that there is no right type of english, and that english comes in many forms therefore there should be no prejudice. She shows this by putting emphasis on the word â€Å"English† and â€Å"Englishes† throughout the text. Tan implies that many people have very narrow minded and misconceived views of people from a different culture or language background, she uses the example of her personal experience and mother to show this, for example people would take her mother seriously due to her â€Å"broken† english, as it suggests that her mother might be uneducated. However Tan also mentions how her mother â€Å"reads the Forbes repot, listens to Wall Street Week, converses daily with her stockbroker and reads all of Shirley MacLaine books with ease- all kind of things i can’t begin to understand†, most of the audience might be quite surprised with this, as it seems very unusual for a women fr om China and who has â€Å"watered-down† english to understand things of such complexity. This in itself proves Tans point of society’s misconception and generalisation of people with different language backgrounds. In this text we notice that Tan uses very simple and easy to read english, however at the same time we are able to understand the complexity of her argument. The last paragraph emphasis how Tan is more concerned about her audience rather than the approval of critics and she doesn’t need to write like a professor to get her point across. Moreover throughout the text has a pattern of using a personal experience then expanding on it.

A Comparison of the Prince and the Analects - 2148 Words

The Prince or The Analects By Rory Steuart Comparing the The Analects (confucious) with the Prince (Machiavelli) is something like comparing George bush and Elizabeth May of the green party. Basically the wrtitings of The Analects totally disagrees with the writings of The Prince. Confucius believes people are easily improved and taught through self promotion and development, Machaveli however sees humanity in a much different light. Machiavelli was an innovator of realism politics and believed that people of power should conduct themselves as tyrants. Machiavelli and Confucius are from totally different time periods and different places in the world. Which could possibly be the reason The Analects and The Prince are so very†¦show more content†¦A prince has plenty to worry about during times of war and everyone is out to get you so you must be greedy and heinous in times of war. The prince declares that the nation state comes first before individuals. A strong prince can encounter any enemy in war. The prin ce proclaims a ruler must not depend on fortifications. A ruler who can’t create a fearsome army and relies only on defense is not a strong ruler. Machiavelli does focus a lot on the importance of having a city that is unable to be taken by siege, but if you must be able to raise your own army to go on the attack. Therefore a Prince must have a heavily fortified city and be able to deploy an army of his own. Machiavelli believes that the foundation of a strong Nation State is a strong army. According to The prince the most important part of being a leader is studying the art of war. Staying in power is a main point in the prince and to stay in power a Prince must conduct a strong army. The Prince proclaims not only do you need a strong army but also you need to be in total control of that army. â€Å"Prince ought to have no other aim or thought, nor select anything else for his study, than war and its rules and discipline; for this is the sole art that belongs to him who rules, and it is of such force that it not only upholds those who are born princes, but it often enablesShow MoreRelatedAn Analysis of the Central Themes of the Bhagavad Gita and Its Influence on Significant Historical Figures and Literature.1521 Words   |  7 Pageschapter can be daunting for some individuals however because of the sheer volume of names and dates that the reader probably will not be familiar with. In the first chapter, the book sets a stage and gives its back story. Essentially, its begins with Prince Arjuna about to take the battlefield with his army against the blind King Dhritarashtra, who has taken the rightful throne of Arjuna and his relatives and plans to pass it to his son so as to secure his own dynasty. In the story, this is taken toRead MoreEssay on Confucianism vs. Buddhism1607 Words   |  7 Pagesthat Confucius came across throughout his life. Buddhism speaks about how to acquire great knowledge throughout life. Confucianism was founded by a C hinese man, but Buddhism was founded by an Indian man. These quick comparisons show how the religions differ, but more detailed comparisons will be seen throughout the essay. The origins and founders of these two religions are quite similar, which will be explained in this paragraph. Confucianism was founded by a man named Confucius; which is how theRead MoreChinese Philosophies And Its Virtue Essay2103 Words   |  9 Pagesthought and think in terms of the group, while westerners think typically of the individual. This is because rice farming had required a collective thinking, while wheat farming favored individualism and required very little work and thought in comparison. Growing rice is hard work and required many people in labor intensive work and maintenance. While rain fed wheat produces less food and requires less labor. A individual family could support themselves by growing wheat, while paddy rice took theRead MoreImportance of Intercultural Communication to Ist7702 Words   |  31 Pagesteaching of the Buddha. Pali became the canonical language for Buddhists from many countries, but comparable texts came to exist in other languages, such a s Chinese and Japanese, as the religion evolved. Confucian tradition people depend on the Analects. This collection has for centuries helped shape the thoughts and actions for billions of people. 2) Authority In nearly all cases, religious orientations have one or more individuals who are recognized as having special significance who are usually