The Pros and Cons of Different Energy Sources free essay sample

They are an important source of energy that we have come to rely on, however, these days there many discussions have been taking place concerning their usage and the impact they play on the environment. As such, I will now list the pros and cons of fossil fuels. The pros of fossil fuels are as follows: 1) One of the advantages of fossil fuels is their existence as high efficiency sources of energy. The reason for this is that, when consumed they produce large amounts of usable energy. 2) Another one of the advantages of fossil fuels is their availability. Fossil fuels are not difficult to obtain from the earth. Also, due to the fact that the extraction and refining processes don’t take long, the fuels are able to be converted from their crude form into forms that could be used for a number of different purposes (Buzzle. com, 2013). 3) The third advantage that fossil fuels have is the ease at which they can be transported. We will write a custom essay sample on The Pros and Cons of Different Energy Sources or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Fossil fuels like coal are able to be transported by train, while oil and natural gas are transported by pipelines. This ease of transportation enables the places that convert these fossil fuels into usable forms, to not have to worry much about location (Buzzle. com, 2013). 4) And lastly, fossil fuels are not only used for energy, but also to create byproducts such as plastic that are used in almost everything (Locsin, n. d. ). Now, the cons of fossil fuels are as follows: 1) One of the major cons of fossil fuels is the danger they pose to the atmosphere. The burning of fossil fuels causes the release of large amounts of carbon dioxide into the atmosphere. This is bad because carbon dioxide is one of the greenhouse gases that contribute to global warming. And that is not all, another one of the gases that is released when burning fossil fuels is sulfur dioxide. This toxic gas produces acid rain when it interacts with the atmosphere. 2) Another one of the cons of fossil fuels is the damage that is done to the landscape when collecting it. An example of this can be seen in coal mining. The landscape where coal is mined is damaged to the point where it is not able to be used for anything else. ) And last but not least, fossil fuels are a non-renewable source. And right now they are being used at an alarming pace because of how modernized our society is these days. So it might not be too far off in the future, when a time will come where we won’t be able to obtain anymore fossil fuels (Buzzle. com, 2013). What are the pros and cons of nuclear energy? The pros of nuclear energy are as follows: 1) One of the pros that nuclear energy b rings is a reduction in the amount of greenhouse gases released into the atmosphere. 2) The second advantage is their relatively low operating costs. ) And lastly, nuclear energy has a large power generating capabilities, that allow for it to be used for industrial and city aspects (Buzz, 2009). The cons of nuclear energy are as follows: 1) The cost of constructing a nuclear energy power plant is high. And that is due to the equipment that is needed to contain the radiation. 2) One of the major concerns of nuclear energy is the disaster that could follow in the event of an accident. 3) And last but not least, another con that really is troublesome is the trouble of disposing of the waste. For one, the waste can last for a couple hundred years. Also, there is the ever present danger that it could leak out and contaminate ground water sources in the area (Buzz, 2009). What are the pros and cons of solar energy? The pros of solar energy are as follows: 1) Solar energy is renewable source of energy. As long as the sun is shining, solar energy is able to be produced. 2) The second advantage is that it is a clean source of energy. 3) And lastly, solar energy is a free source of energy, and its solar panels require almost no maintenance (Energy for Mankind. org, 2011). The cons of solar energy are as follows: 1) Solar energy can only produce its maximum of energy during the day, and when the sun is shining the longest. 2) Solar panels are very expensive. 3) And lastly, a lot of space is needed in order so the exact amount of solar panels that are needed could be installed (Energy for Mankind. org, 2011). What are the pros and cons of wind power? The pros of wind power are as follows: 1) It is a renewable source of energy. 2) It is also clean and free source of energy. 3) It won’t take long to recover the cost of purchasing and installing the wind turbine. ) And finally, a cool advantage of wind power is the fact that the electric company will reward for any excess energy that you produce but don’t use (Bernard, n. d. ). The cons of wind power are as follows: 1) One of the cons of wind power is its inconsistency. Since wind does not blow continually, wind turbines usually operate at 30% of their capacity. 2) Wind turbines have expensiv e upfront costs. 3) And lastly, another con of wind power is location. A wind turbine requires a lot of open land, in order to operate properly (Bernard, n. d. . What are the pros and cons of water (hydro) power? The pros of hydro energy are as follows: 1) Hydro power is a clean, renewable source of energy. 2) With the construction of a dam, there will be an abundance of electricity produced for many years. The cons of hydro power are as follows: 1) One of the cons of hydro power is the cost of constructing the dam. 2) The dams have to be built to the highest of standards. Precision, accuracy, and the right materials need to be utilized in order to achieve that goal (Energy for Mankind. org, 2011). What are the pros and cons of biofuels? The pros of biofuels are as follows: 1) Biofuels produce less carbon dioxide and other greenhouse gases than a fossil fuel like oil. 2) Another advantage of biofuels is that they are immediately useable. 3) And lastly, Biofuels are high quality fuels that have allowed us to reduce our dependence on fossil fuels (Biofuel sustainability pros amp; cons, 2006). The cons of biofuels are as follows: 1) One of the cons of biofuels, is an increase in the clearing of rainforests in developing countries, in order to grow biofuel crops like corn. ) The growth of biofuel crops can have a negative impact on the prices and security of food. 3) And lastly, the creation of biofuels burns more energy than what is contained in the finished product. Therefore it isn’t an efficient fuel (Cunningham, n. d. ). When it comes to the Energy Policy Act of 2005, two of its provisions that I found interesting are the daylight savings time extension, and the creatio n of the energy star program. In the provision concerning daylight savings time; the daylight savings time was extended two weeks in the spring, and one week in the fall. These changes were to take place in the month of August of 2006. On the other hand, in the provision about the creation of the Energy Star program, the government created the program under the DOE and Environmental Protection Agency. The symbol of the Energy Star serves as an indicator of energy-efficient products and buildings. Last but not least, some of the tax incentives included in the Energy Policy Act of 2005, were for the installation of energy efficient appliances, residential energy properties, new homes, commercial buildings and more (Think Energy Management, LLC. n. d. ). References Bernard, M. (n. d. ). Pros and Cons of Wind Energy. Retrieved from, http://greenliving. lovetoknow. com/Pros_and_Cons_of_Wind_Energy Biofuel sustainability pros amp; cons. (2006). Retrieved from, http://curtrosengren. typepad. com/alternative_energy/2006/08/biofuel_sustain. html Buzz, P. (2009). Nuclear Energy: Pros and Cons. Retrieved from, http://www. triplepundit. com/2009/02/nuclear-energy -pros-and-cons/ Buzzle. com. (2013). Fossil Fuels Pros and Cons. Retrieved from, http://www. buzzle. com/articles/fossil-fuels-pros-and-cons. html Cunningham,

Tips For Writing a Sample Essay

Tips For Writing a Sample EssayAre you just learning how to write a sample essay? Do you want to get the most out of your writing, but not know where to start? This article will give you some tips on how to prepare for your essay.First, don't worry about plagiarism; plagiarism is very common in written English. All you need to do is read other people's essays and compare them to yours. If they can use one or two paragraphs that you've used, then you can borrow it, but don't steal it. If you are unsure of the exact source of a sentence, you should look it up in a dictionary to see what words are actually used to describe it. If you're looking at a picture and you can't figure out what the eyes mean, you should simply read it to get the meaning.Second, when you're learning how to write a sample essay, keep in mind that you are writing for your future employer, not your prospective future. Even if you have a lot of experience in college, be careful not to assume you know what your writi ng needs to be. Even if you are an excellent writer, you need to learn about grammar, spelling, and structure before you begin your essay. You might need help with these things, and you might even learn something new by studying these tips.Third, write from the point of view of your readers. Don't try to persuade your readers to agree with you. Focus on what your reader wants to hear, and try to convey that as clearly as possible. You don't want to end up sounding like a salesperson or a salesman, but you also don't want to be too preachy.Fourth, always include your contact information in your sample essay. This is important because it gives your readers the opportunity to get in touch with you to ask questions and provide feedback. This helps build a relationship with your readers, which is a really important thing to remember when you're writing your essay.Fifth, take the time to read over your essay at least once before you send it in. It's important to read through your sample s o that you can spot problems and to make sure that everything works. If you're not happy with the essay you wrote, you can go back and edit it until you are happy with it. However, you must send in the same essay as your original one.If you've been practicing on your own, this last tip can be especially helpful. It's a good idea to have a friend or mentor read through your sample essay before you send it in, as well as offer you constructive criticism and suggestions about your essay.

Heres How to Calculate pH Values

Here's How to Calculate pH Values Heres a quick review of how to calculate pH and what pH means with respect to hydrogen ion concentration, acids, and bases. Key Takeaways pH is a measure of how acidic or basic a chemical solution is.Normally, pH runs from 0 to 14.A neutral pH value is 7. A value less than 7 is acidic, while a value greater than 7 is basic.The formula for pH is  pH -log[H]. This means pH is the negative base 10 logarithm (log on a calculator) of the hydrogen ion concentration of a solution. To calculate it, take the log of the hydrogen ion concentration and reverse the sign to get the answer. Review of Acids, Bases, and pH Formula There are several ways to define acids and bases, but pH only refers to hydrogen ion concentration and is only meaningful when applied to aqueous (water-based) solutions. When water dissociates it yields a hydrogen ion and a hydroxide. H2O ↔ H OH- When calculating pH, remember that [] refers to molarity, M. Molarity is expressed in units of moles of solute per liter of solution (not solvent). If you are given concentration in any other unit (mass percent, molality, etc.), convert it to molarity in order to use the pH formula. Using the concentration of hydrogen and hydroxide ions, the following relationship results: Kw [H][OH-] 1x10-14 at 25 °Cfor pure water [H] [OH-] 1x10-7Acidic Solution: [H] 1x10-7Basic Solution: [H] 1x10-7 How to Calculate pH and [H] The equilibrium equation yields the following formula for pH: pH -log10[H][H] 10-pH In other words, pH is the negative log of the molar hydrogen ion concentration. Or, the molar hydrogen ion concentration equals 10 to the power of the negative pH value. Its easy to do this calculation on any scientific calculator because it will have a log button. This is not the same as the ln button, which refers to the natural logarithm. Example: Calculate the pH for a specific [H]. Calculate pH given [H] 1.4 x 10-5 M pH -log10[H]pH -log10(1.4 x 10-5)pH 4.85 Example: Calculate [H] from a known pH. Find [H] if pH 8.5 [H] 10-pH[H] 10-8.5[H] 3.2 x 10-9 M Example: Find the pH if the H concentration is 0.0001 moles per liter. pH -log[H]Here it helps to rewrite the concentration as 1.0 x 10-4 M because if you understand how logarithms work, this makes the formula: pH -(-4) 4 Or, you could simply use a calculator and take: pH - log (0.0001) 4 Usually, you arent given the hydrogen ion concentration in a problem but have to find it from a chemical reaction or acid concentration. Whether this is easy or not depends on whether youre dealing with a strong acid or a weak acid. Most problems asking for pH are for strong acids because they completely dissociate into their ions in water. Weak acids, on the other hand, only partially dissociate, so at equilibrium, a solution contains both the weak acid and the ions into which it dissociates. Example: Find the pH of a 0.03 M solution of hydrochloric acid, HCl. Hydrochloric acid is a strong acid that dissociates according to a 1:1 molar ratio into hydrogen cations and chloride anions. So, the concentration of hydrogen ions is exactly the same as the concentration of the acid solution. [H 0.03 M pH - log (0.03)pH 1.5 pH and pOH You can easily use the pH value to calculate pOH if you recall: pH pOH 14 This is particularly useful if youre asked to find the pH of a base since youll usually solve for pOH rather than pH. Check Your Work When youre performing a pH calculation, its a good idea to make sure your answer makes sense. An acid should have a pH much less than 7 (usually 1 to 3), while a base has a high pH value (usually around 11 to 13). While its theoretically possible to calculate a negative pH, in practice pH values should be between 0 and 14. This, a pH higher than 14 indicates an error either in setting up the calculation or else using the calculator.

How Meaning of Words Change Throughout the Generations Research Paper

How Meaning of Words Change Throughout the Generations - Research Paper Example That indicates that it is common for an individual from outside a circle to get lost when engaging in a discussion from members who belong to the same circles. However, some slang words usage remains almost the same with only acquiring growth in terms of usage across various cultures and group settings. The usage of the words may at times become seasonal where almost every group uses the word at a certain period and then the word gets replaced by another more appealing word. Some slangs may, however, maintain the same meaning while compared with the dictionary meaning although changes may result over time. The paper examines the usage and meaning of the word cool according to the researcher’s perspective and how the circle that the researcher belongs to uses the word in expressing opinions or reactions. As a student, my circle comprises of students in a few groupings from the academic platform and the extra-curricular platform. As a student, interactions are common with group members and other classmates as most of the day time hours are spent together with other students. On the other hand, as a footballer for the school team, interactions with other team members are evident during training and game time. The word cool as used in the two group settings is often used in the two group settings mostly to signify something good. The difference between the meaning of the word is portrayed while examining the result that I attributed to the word cool by these two groups. Consider for example a situation where upon submitting a group representation in the class, our study group scored eighty percent, although the performance was the fifth while compared to the other groups. From citing the performance as cool, the group leader and the group members signified that although the performance was not excellent, it was good.

Journals review in Venture Capital topics Essay Example | Topics and Well Written Essays - 750 words

Journals review in Venture Capital topics - Essay Example While many financial venture capital funds are structured as SBICs, their main goals, however, are to ensure the profitability of the corporate parent and make the most investment returns out of the financial expertise and contacts of the corporate staff. Third, corporate venture capital funds are either subsidiaries or stand-alone firms organized by non-financial institutions like industrial firms, for instance. They function as in the case of industrial firms to make early investments and take advantage of new technologies. Finally, venture capital limited partnerships are funds organized by professional venture capital firms who have the capability to organize, invest, manage, and liquidate the capital raised from the partnership. The most predominant type in the market for venture capital finance is the venture capital limited partnership which manages more than half of the total industry resources. Unlike SBICs or financial and non-financial corporate funds which have problems in internal affairs, funding sources, or compensation packages, limited partnerships are the safest choice in venture capital funds. They function solely to maximize earnings from venture investments. Most European venture capital funds are sourced from financial institutions like banks, unlike the US venture capital which sources more on institutional investments like pension funds. In Europe, banks are more dominant and powerful that a significant number of venture capital firms are owned and managed by them. Their investments are diverse and are scattered along many different funds. Aside from having strict financial goals, European banks are also found to have strategic objectives in managing their investments. In fact, almost half of European venture funds in 2000 were sourced from banks, insurance companies, and other corporate investors. In the US, however, institutional investors are the most popular sources of funding. Pension funds, for instance, allot only a

Tituba and two elderly women Essay Example for Free

Tituba and two elderly women Essay However nobody can be held totally responsible, if the people had not believed Abigail and been so nai ve to think that witchcraft was present in the village none of it would have happened. The heroes of the story are all those that stuck to their principles and died for their cause. Corey would not condemn his friend as the others had done and stuck to his principles throughout the play. Rebecca Nurse who will not lie to save herself and Proctor who fights against the charges and does what is morally right in the end. Hale tried to be a hero as he tried to save the lives of the condemned but it was too late for him, the damage had been done. The village rapidly becomes split in two, those who are for the court and those against it. For the court are: Parris, Abigail, Danforth, Hathorne, Mary Warren, Putnam and Goody Putnam, all having very different reasons for being on that side, they are also supported by the majority of the. Against the court are: Elizabeth, Proctor, Giles Corey, Martha Corey, Rebecca Nurse and Francis Nurse. Hale is for the court proceedings at the beginning of the story then changes to against during the court scene in Act Three. These are quotes that support the court: Mrs Putnam: You think it is Gods work you should never lose a child, nor grandchild either, and I shall bury all but one? There are wheels within wheels in this village, and fire within fires! Putnam: She cannot bear to hear the Lords name, Mr Hale; thats a sure sign of witchcraft afloat. This woman must be hanged! She must be taken and hanged! Mary: I must tell you sir, I will be gone every day now. I am amazed that you not see what weighty work we do. You must see it sir, its Gods work we do. So Ill be gone every day for some time. Im I am an official of the court, they say. I am bound by law, I cannot tell it. Cheever: I am a clerk of the court now, yknow. Hathorne: Arrest him Excellency! This is contempt, sir, contempt. Danforth: This is the highest court of the supreme government of this province, do you know it? But you must understand, sir, a person is either with this court or he must be counted against it, there be no road in between. Hang them high over the town! Who weeps for these weeps for corruption! Parris: Hes come to overthrow this court, Your Honour! These are quotes against the court: Rebecca: I think Ill go then. I am too old for this. Francis: Reverend Hale! Can you not speak to the Deputy Governor? Im sure he mistakes these people. We have proof of it, sir. They are all deceiving you. Proctor: If she is innocent! Why do you never wonder if Parris be innocent, or Abigail? Is the accuser always holy now? Were they born this morning as clear as Gods fingers? Ill tell you whats walking Salem vengeance is walking Salem. We are what we always were in Salem, but now the little children are jangling the keys of the kingdom, and common vengeance writes the law. I will fall like an ocean on that court! Hale after he sides with the court: I denounce these proceedings, I quit this court! Throughout the play Miller is trying to convey certain messages which he felt were important. Although this was written fifty years ago, many are relevant today. One message is Power corrupts the power that Abigail held over not only the girls but also the community helped her to corrupt their minds and beliefs. Without this corrupting power the situation would not have gone to court and innocent people would not have died. Corporal and capital punishment are wrong. Throughout the play each character that was for the court was not for it for the right reasons. Parris was for the court to gain revenge on Proctor and to retain his position in the community, Abigail to take the blame off herself and to eradicate Elizabeth from the love triangle, Putnam to gain land and Mrs Putnam as she cannot seem to grasp the fact that she cannot have children, Hathorne and Danforth as they are enforcing the law and Mary Warren as she is taken in by Abigail. None of the accusations are based on true facts, as a result of these lies innocent people were hanged. If we read the Echoes down the Corridor it states that Twenty years after the last execution, the government awarded compensation to the victims still living and to the families of the dead. Basically the government admits that the hangings were wrong, but no money will bring back the people who were lost, capital punishment cannot bring back the dead if they are found to be innocent later. Echoes down the corridor gives the reader an insight into what happened after the hangings and the effect on the community, Parris was voted from office and left Salem, Abigail turns into a prostitute, Elizabeth married again and farms belonging to victims were left to ruin. The things mentioned are true and are not fictional it shows that Abigail, after her scheming lying ended up in the lowest, demeaning job. Greed is a powerful motivator. The Putnams throughout the play are fuelled by their greed for more land. Their motivation for encouraging the trials, along with the death of their seven babies was greed for land. They do not care who they hurt and consequently, in effect murder, so long as they get what they want. Consider the consequences of your words/actions. Throughout the story people did not think what the possible consequences could be of crying witchcraft. If Abigail had stopped to think that there was a possibility that Proctor would have been hanged, she would not have done what she did. Proctor did not think when he slept with Abigail that Elizabeth would find out and that it would cause friction in their relationship. If Mrs Putnam had accepted the fact that she cannot bear children, she would not have accused anyone, then lives would not have been lost. If Hale had realised right from the beginning that witchcraft was not present in Salem, that the accusations would lead to innocent people being hanged and listened to his conscience, then he may not have been so hungry for statements. Evil as well as good is endemic in society. Both evil and good people can be found in society. Characters such as Abigail, Putnam and Parris were evil in the story and good characters were Proctor, Elizabeth, Giles Corey and Rebecca Nurse. However if there were no evil people in society and in the play we would not know what good was. I think this is an excellent play. I like the way it is based on a true story as it makes it more interesting to read and watch. I think that Miller is a very clever playwright using interesting plots, characters and language to add interest to the play. The messages it conveys were not only relevant then but also now, there is evidence supporting many of his messages today. I think the way Miller leaves it up to you to decide about the characters personalities and their actions is part of what makes the play please everyone, everybody can take something away from the play. My particular favourite quote is said by Elizabeth in Act Two I do not judge you. The magistrate sits in your heart that judges you. To me it means that the only person who can judge you is yourself, nobody else can, as long as you are happy with whom you are. The tension and drama of the play, particularly between John and Elizabeth and during the court scene makes an excellent play. There is great contrast between certain moments for example Act One ends with frantic cries from the girls then Act Two begins with tension and silence between Elizabeth and John. Throughout the story you constantly ask yourself, will John stick to his principles and become a martyr or will he back down and live? Will people continue to believe Abigail? These elements of the play makes you want to read on and find out. The love element throughout the story makes it interesting and we can empathise with the characters, the plot is not unbelievable. The ending has a twist to it, we begin to believe that Proctor will sign the confession then he tears it up, the ending satisfies everybody, Proctor is forgiven and dies a hero. We know Abigail is a villain, but we cannot help but feel some sympathy for her, she watched her own parents killed, she is an orphan living in a community in which she feels suffocated and her heart has been torn apart. When we first began to read the play I did not understand it because there are so many characters and I did not understand the background to the play or generally what was happening. The language was difficult to understand and I did not understand where the play was leading. When we watched a video of the play I began to understand it and was disappointed when we finished reading the play as I had just begun to enjoy it. When I watched the video I learnt who all the characters were, what their positions were in the village and what was happening. I found it easier to understand and I felt that the costumes and the houses made me feel more like I was there. I thought the video was close to the script in the book and was a good representation of the play in film form. I think that if I read this play again I would really understand it and appreciate it even more. Show preview only The above preview is unformatted text This student written piece of work is one of many that can be found in our GCSE Arthur Miller section.

College Students and the Media :: Research Essays

College Students and the Media With my initial research, I sought to find out whether or not college students were informed of the news in the community and world. My results were inconclusive, and through a case study (below) I shifted topics to the attitudes of college students towards the news-media. Through a case study, interviews, and surveys I found that college students have mixed views towards the news-media. The news-media influences how many people think on a certain topic. If news-media reports and accounts are biased, people may be manipulated to believe things that are not true or factual. People, from superstars to the president, can be portrayed as good, evil, selfish, crazy, intelligent, etc. The news-media can use propaganda to illicit these feelings of like or dislike. The responsibility of the news-media is huge. Some blame school violence and shootings on the media. Others criticize the news-media for copy-cat crimes or crimes purposely committed for the attention of the news. But on the other hand, we trust the news-media will keep us accurately informed of events in the world and community. On Tuesday, September 11, 2001, we all sat with teary eyes glued to the television set, watching the news; did we trust what we heard? Case Study The purpose of this case study was to see what a college student is more interested in. I sat down with a college student, Grace, and presented her with two sources of news and information. The two selections were The Indiana Gazette and Star magazine. By doing this case study, I hoped to learn whether this student was more interested in community and world news or gossip in tabloids. I instructed Grace to read through them as she pleased, taking as much time as she wanted. While she was reading I asked her questions about why she chose an article, or why she thought it was interesting. She read the newspaper for an hour and five minutes.