Is It Safe To Travel By Airplanes Engineering Essay

Is It Safe To Travel By Airplanes Engineering Essay About five hundred years back, the amount of time required to travel a thousand mile was more than days and sometimes even months. Back then, the ordinary people used to travel by foot and only the rich could afford animal driven carts. This wastage of time was reduced by the introduction of engine powered cars and trains. Even though these vehicles were faster than the animal driven carts, it still took days to travel around thousand miles. Therefore another means of transportation had to be invented by which this time wastage could be diminished. Thus the Wright brothers was able to make the first plane, which could travel much faster than the trains and cars. Thus the time required to travel was drastically decreased by the invention of planes. Due to the huge advances in technology in the 21st century, there are planes that can travel even faster than sound. These planes take less than an hour to travel more than thousand miles. Travelling by the means of air has become the most fastest and common method of transport especially for great distances. At the present situation, we can travel around the world in less than a day unlike the past when it used to take months to do so. Thus we can now travel anywhere in the world by the time we have a small nap and a coffee. But as in most cases of technological advancements, we cannot achieve such great feat without a price. One such price we had to pay over and over again is the lives of the individual that was lost in the numerous airplane crashes we had ever since we started using the airplane. The airplane crashes have claimed oven ten thousand lives in the last decade in over 1800 accidents. Though the number of accidents has been reduced to half the number a decade back, the number of death tolls hasnt decreased much. This is because as the technology increased, the number of passengers on a flight increases. Earlier only around hundred people could travel in a plane and now there are flights that can accommodate more than 500. Thus the number of passengers involved in one accident increased and even though there are fewer accidents, two or three are enough to take more than 1000 lives. Aviation fatalities have existed since the time of the invention of planes. The first of it occurring on one of the models of the Wright brothers causing death of a passenger on board and injuries to Orville Wright himself. Beginning that incident certain safety features were added to the plane in order to reduce accidents. The aviation safety equipment industry has become a very big one and now is a billion-dollar industry on its own. The aviation safety has improved significantly over the past hundred years of its implementation. Over the last few years more than 95% of the people in U.S. plane crashes have survived as a result of the new safety features introduced in them. One of the most terrifying aviation accidents was the Tenerife incident. It is the disaster that has caused the highest number of fatalities. More than five hundred fifty people died in this disaster. This occurred when a KLM Boing 747 collided with a Pan Am747 at Los Rodeos Airport in Spain. The cause of the crash was the pilots error. The pilot of the KLM flight attempted to takeoff without clearance and collided with the taxiing Pan American flight. This incident was completely the mistake on the side of the pilot but there are certain ones that are also caused due to mechanical failure. The crash of the JAL Flight 123 was one such case. About five hundred twenty were dead in this accident when the aircraft underwent an explosive decompression due to an incorrectly repaired aft pressure bulkhead. This occurred in mid flight and destroyed most of the flights vertical stabilizer. This also severed all of the hydraulic lines, making it virtually uncontrollable. In this case the pilot s were more experience but their experience could only keep the plane flying for a few more. The plane finally crashed into a mountain making it the single-aircraft disaster with the most number of fatalities. This was a case of mainly mechanical problems and not the pilots error. The introduction of the airborne collision avoidance system was done after the 1996 Chakhri Dadri mid-air collision. In this accident a Saudia Flight 763 crashed on an Air Kazakhstan flight 1907 when the Kazakh pilot was flying lower than the altitude he was given clearance to. This accident claimed 349 lives, which includes all the crew and passengers aboard both the flights. The airborne collision avoidance system gives information about any aircrafts or flying objects nearby thereby helping the pilot to change its course in order to prevent collision. As the technology became advanced, the speed with which the aircrafts could fly increased as well as the safety features required to travel at those speeds. One of the greatest planes ever made was the Concorde. It was considered as an aviation icon and an engineering marvel. This airplane was powered by a turbojet engine, which made it possible for it to travel faster than sound. This supersonic passenger plane made the time required to travel to any place half the current time required. The production of these planes was stopped shortly after the Air France flight 4590s crash. This was a Concorde flight scheduled from Charles de Gaulle airport to JKF airport. It crashed into a hotel in Gonesse, France shortly after its takeoff. All nine crewmembers and one hundred passengers aboard could not survive the accident. This incident took place due to a chain of errors and the main one being exceeding the maximum takeoff weight limit. This limit was not exceeded by a small amount but by a ton. Though the flight could have handled this excessive weight, the flight could not takeoff properly because the center of gravity of the whole weight was concentrated on the rear of the flight. Also a titanium alloy strip fell out of a Continental Air flight during takeoff five minutes before the takeoff this flight. The runway staff did not do the necessary step to inspect the runway and remove this seventeen-inch long debris. It was a part of the protocol for Concorde takeoff preparation that the runway should be inspected before takeoff. As a result of this debris lying on the runway, it cut a tyre of the Concorde flight rupturing it. Due to the centripetal forces, a piece from the tyre that weighed ten pounds struck the underside of the aircrafts wing structure with speed more than 300 mph. Though this did not directly rupture any fuel tanks, it send out a pressure wave causing one of its fuel tank to rupture at its weakest point. This was the fuel tank that was overfilled earlier during fuel transfer. Either the electric arc of the landing gear or some severed electric cable ignited the leaking fuel. Due to this fire, both engine one and two surged and lost all its power. But after a few seconds, engine one recovered but a large flame was developed around the second engine. Thus the First Engineer had to shut down the engine two in order to prevent spreading of fire. Since the flight had crossed the minimum speed to takeoff, the crew continued takeoff, but the crew was not able to do so properly with the remaining three engines as the severed cables prevented the retraction of the undercarriage. Thus the plane could not gain a speed more than 200 knots and a maximum altitude of 200 ft. The increasing fire caused the wing to disintegrate due to extremely high temperature. The Engine one surged again but failed to recover this time. Due to the uneven thrust on the flight, the flight started to bank to one side for more than 100 degrees. The crew trying to level the plane, slowed down the other two engines. This caused the flight to loose it airspeed and made it impossible for the crew to control it and the plane started to stall and consequently crash. After this crash, the use of Concorde flights for passenger transportation was stopped until the investigation of this case was done. The people to be held responsible were the ground staffs who were responsible to make sure that the runway was clear. Experts claim the supersonic aircraft hit a piece of stray titanium from another aircraft, puncturing its tyre which set off a chain reaction that caused the disaster.(Airline Industry Information, 2004). If the ground staff would have done inspection properly, the whole disaster could have been prevented. Another incident occurred when the Uruguayan Air Force flight 571 carrying 45 people, including a rugby team crashed into Andes. More than 10 people died in the crash and some others by the injuries and the cold weather. But the rest was rescued after 70 days of this incident. This accident was because of the bad weather, which restricted the flying of the plane above 30000 feet. Also the whole area of the mountains was covered in clouds, which lowered the visibility of the pilot. Due to low visibility the plane crashed into a peak, which caused wreckage to one of its wings thereby taking the control out of the pilot and crashing the plane. Though the pilot was not aware of these situations, the co-pilot was. The pilot had not been flying the plane, but the copilot had crossed the Andes before. (Read, 1975). The copilot still could not save the plane but made his best to do so. One of the accidents that has been caused due to mechanical failures and no crew could have avoided was the Valujet Flight 592 incident. It claimed 110 lives in that accident. This was because of some expired oxygen generators place in the cargo compartment by the maintenance contractors of Valujet. There was a small fire in the cargo compartment and according to normal procedures the fire would have extinguished itself as this was an airtight compartment and as soon as the oxygen supply in this compartment was finished, the fire would extinguish itself. But the oxygen generators produced more oxygen causing the fire to increase and escape that compartment. This caused a pressure difference aboard and made the pilot loose his control. The Fire finally spread throughout the plane. This wasnt the fault of the crewmembers but the fault of the maintenance company. No airline personnel made any mistakes in the operation of the plane; an oxygen generator accident could have occurred on any airline. In short, ValuJet was unfairly criticized for an accident that had nothing to do with the operation of the plane.(Cobb, 2003) Not only mechanical failure and pilot error, but also the acts of terrorism has proved to be one of the major causes of air crashes. One of the major victims of the terrorist attack was the Air India flight 182. This plane crashed off the southwest coast of Ireland when a bomb held in the cargo went off. Everyone aboard the flight died including 22 crewmembers making a total of 329. This was the act of the Sikh extremists retaliating the attack of the government on the Golden Temple. The bomb was kept in a bag of a passenger who did not board the flight but his baggage did. Thereafter this event certain security measures were maid to ensure that the baggages of any person not travelling was to be offloaded of the plane before its takeoff. The terrorist bombing of the Pan American flight 103 in Scotland which claimed the lives of 243 passengers, 16 crew and 11 people on the ground made the security rules mandatory in all American flights flying out of the 103 airports in the Western Europe and Middle East. New steps such as X-raying or physically examining all the checked baggage and also to increase the screening of the passengers. The authorities argued that though it may be a waste of time but still safety has its value. In fact all the advancements in safety through rules and regulations have come only as a result of loss of numerous lives and if further advancements have to be made, it cant be done without further loss of life. Another major aviation disaster occurred when the American Airlines flight 587 crashed into the Belle Harbor neighborhood of Queens, New York. The flight had just departed the JFK international airport and the accident occurred when the first officer overused the rudder in response to wake turbulence from a Japan Airlines 747. It claimed the lives of all 260 people aboard and also five people on ground. This was another accident caused due to human negligence. A similar situation was there aboard the Egypt air flight 990 crashed into the Atlantic Ocean in the international waters. According to the report given by the National Transportation Safety Board, the pilot deliberately dove the aircraft into the water. But the Egyptians deny this conclusion and say that it was a mechanical failure. Although if we look at these accidents recently we can see they were mostly caused by bad decisions made by humans. So this brings up the question, is it the planes or the pilots that are more dangerous? As we can see from the previous paragraph, most of the crashes/accidents that happened will not happen again as necessary safety precautions have been made and the flights are equipped with certain new devices in order to prevent most of the accidents mentioned earlier. As far as the case of human errors, the planes are fitted with automated systems wherever possible but still there are certain areas where the artificial intelligence is not enough. Therefore it is right now not possible to remove the human part from the control of the flights. Maybe in future there may be a possibility of human less aircrafts. There are certain crashes caused due to lack of concentration of the pilots. This is when pilots with huge experience do not care much and feel overconfident. One such case was in 2007, when two Air Patrol pilots with a total of 53,000 hours experience crashed onto 8000-foot mountain. This happened when one of the pilots was showing the other a demonstration of the plane itself. He did not plan the route ahead and did not pay concentration to the terrains in that area. This also happens to some of the new pilots. Some of the inexperienced pilots do not abide by the rules and cause crashes. Also distractions cause the pilots to deviate from the plan and may cause the plane to crash. It is most often the carelessness of the pilots that cause the lives of many. Pilots sometimes skip flight planning and abbreviate checklists when they are just doing a short hop. (Hopkins, 2012)

Pop Art Comparison of Seated Woman and Lavender Disaster :: Essays Papers

Pop Art Comparison of Seated Woman and Lavender Disaster Pop Art was a Modern art movement that emerged durring the mid-twentieth century in both England and America. It first began to gain recognition in the early 1950’s, after about twenty years of Abstract, as artists altered their attention and looked to change. In the late 1950’s and early 1960’s, Pop Art became much more popular to the general public and successful for the movement’s artists due to the world growing tired of the repeditive forms of Abstract. Found in the Menil Collection, Seated Woman and Lavender Disaster are two examples of Pop Art. The comparison of these two pieces shows although they differ in medium and subject matter both Seated Woman and Lavender Disaster share common underlying themes possesed by all Pop Art. George Segal was an American artist from New York. He began experamenting with the use of a new kind of medical bandage designed for setting fractures, and he developed a techniquie using these bandages to make plaster casts. This allowed Segal to produce a figure that kept the essential human traits with out great detail, and also enabled these figures to be cast directly from a live model. It is in this way that George Segal created Seated Woman in 1967. Andy Warhol was a graphic artist, painter, and film maker, amoung other things, also associated with Pop Art. He moved to New York, around 1950, where he did his first advertisements as a comercial artist and, later, began showing in expositions. One technique employed by Warhol involved repeditive silk screen prints on canvas. He used this method to produce many series of prints with various, easily reconizable images. Between 1962 and 1964 in his self titled studio â€Å"The Factory†(Phaidon 484), Warhol produced over two thousand pictures. One of these, Lavender Disaster, was made in 1963 and belonged to a series of pictures all including the same image of an electric chair. The subjet matter of these two Pop Art examples is for the most part quite different, although there are some similarities. George Segal’s piece is a white plaster figure on a wooden chair with a vinyl seat pad. The figure is sitting sideways in the chair, with her right side being closest to the back of the chair.

Preparing for Success Essay

Education is the basis of creating a life full of wealth and contentment. Obtaining a high school education can help one succeed in his or her future and give one the opportunities to pursue his or her aspirations. Unfortunately many students lack the education, resources and knowledge to enter adulthood after graduating high school. They are not sufficiently prepared to enter into the work force, succeed at a university, or have any understanding on how to be an ethical citizen. Students should be given the chance to develop a strong work ethic, be given the opportunity to explore different careers and college options, acquire skills that will help them in college and obtain an understanding of how their government works before graduating high school. A strong work ethic is obtained by developing a sense of independence and becoming dependable. Every year, if students’ reliance on teachers was decreased, they would be forced to rely on themselves to remember when coursework i s due. During my senior year at the high school I attended, El Molino High School in Forestville California, students in my English class were given a syllabus with an outline of the course and dates when homework was due. The teacher did not remind us when assignments were due, and we had to remember when work was due. In college, a student has to rely on himself or herself to take notes, remember when homework is due, and study on his or her own for exams. Therefore academic skills learned in high school should be similar to the skills required in a college classroom and those that people can use in their adult lives. Students graduating from high school should†¦be able to read with understanding classic literature and write well-organized and grammatically sound essays; they should know the basic outlines of American and European history, have a good beginner’s grasp of at least two natural sciences as well as pre-calculus mathematics (Gutting). Having these basic skills and learning to become self-sufficient would make the transition from high school to career less stressful for those who decide not to attend college. Being independent and learning to rely on oneself will help one become more  dependable, and in turn, a better employee. To strengthen a student’s work ethic, high schools should require students to rely more on themselves, which would help students become more independent. Students will not know what career they want to pursue once they graduate high school if they are never given the opportunity to investigate and experience different occupations. For students who have decided not to attend college, high school should be the institution where different careers can be explored. High schools should have the responsibility of helping students find internships or job shadowing opportunities specific to careers students are interested in. At El Molino High School a career based project, during our senior year, was given so students had the opportunity to research the occupation they are interested in. They were then required to find an internship or a volunteer opportunity related to the career topic they had selected. Students could then find out what they liked and didn’t like about the career through first-hand experience and have more insight into whether or not they wanted to pursue that career after graduation. For my project, I chose to volunteer at a convalescent center to gain experience in the nursing field. After the project was over, I knew nursing was the right career for me, and decided to pursue a degree in the health care industry. But if a career based learning project is not required, counselors should help students find internships, attend job fairs, and find classes that would be beneficial to the career a student wants to pursue. High school should be a place where students are given adequate preparation for the work world, whether they are attending college or not. In high school, many students have no idea which college they should attend. Counselors should take the time to discuss with each student his or her plans for after graduation. The counselor and the student should then construct a list of universities that have programs corresponding with the degree the student wants to pursue. At the end of my junior year at El Molino High School, I met with my counselor and we created a list of ten colleges that had respectable nursing programs. Making the list helped me to narrow down my search and choose a college, but many students at my high school did not take advantage of the opportunity to meet with their counselor because the information about meeting was not broadcasted well.  Meeting with a counselor when going through the college process is incredibly helpful. If more students made the effort to receive help from high school counselors and counselors made a better effort to reach out to all students when exploring college options, they would have an easier time choosing a university. High school should thoroughly prepare students who are planning to seek a higher education after graduation. Academic skills learned in high school should be similar to the skills required in a college classroom. Developing adequate study habits is key to success in college. Studying for a couple hours every day, whether or not there is homework, should be second nature to a student when he enters college. Attaining proper note taking skills in high school and figuring out a format that best helps one study is a critical aspect to receiving good test grades. Some students do not have a chance to learn how to take usable notes. At Analy High School, which is a high school near El Molino, students were never taught how to take usable notes which made it more difficult for them to study for tests due to poor organization of the notes they did take. I taught one my friends from Analy the note taking styles I had learned. After he mastered the different styles and started taking organized and usable notes his grades improved. A specific section in freshman English should teach students the different note taking styles. In my sophomore English class we were introduced to different not taking styles including the Cornell method, which I found was a very useful way to study for tests. Another element that should be incorporated into high school curriculum is different essay and paper formats. Many high schools only teach the MLA paper format, and do not cover APA, which is the format many college students are required to use for their papers. If core classes taught techniques that students could utilize in college, the transition between institutions would be less difficult. After graduating high school, students should have a general understanding of how their government works in order to become competent citizens. According to Theodore Sizer â€Å"knowledge of the government to the extent the child will be equipped to make informed choices among persons and issues that affect his own governance† (119), is one of the general elements of an efficient education system. To make decisions when voting that will benefit oneself, he or she needs to be informed on all the candidates and propositions. When I was in Advanced Placement  Government, my class spent a significant amount of the first semester researching candidates and understanding the propositions for the 2012 election. Though few people were eighteen and had the ability to vote, reviewing the information in the voting packet helped us understand how the voting process works, and how to read the propositions thoroughly so we when we did vote, we could understand exactly what we would be voting for. All high schools should offer a course that helps students understand the voting process and sufficient information about the American government should be provided to all students before they have the capability to vote. High schools should be able to sufficiently prepare students for their lives after graduation by giving them tools to develop a strong work ethic, explore colleges and careers, and understand how the government works. If students were given these opportunities for improvement in high school, the transition into an adult life would be easier. Works Cited Gutting, Gary. â€Å"What Is College For? (Part 2).† The New York Times: The Opinion Pages. 11 Jan. 2012. 17 Nov. 2013. Sizer, Theodore. â€Å"What High School Is.† Reading Culture. White Plains, NY: Longman, 2011. 119.

Essay on Glover Chanise SE4

Essay on Glover Chanise SE4 Essay on Glover Chanise SE4 Chanise Glover June 5, 2012 Short Essay 4 Theology 202 Eschatology I met a lot of interesting people here at Liberty. One of whom is Steve. And last week Steve read a book by Clark Pinnock . I can’t remember the name of the book partly because I was hardly paying attention to Steve when he was talking but I do remember how much a quote from the book was bothering him. When he told me the quote I have to admit it went right over my head but it seemed like it was really bothering him. So when he asked me to explain as best as I could what it all meant†¦ When looking in the bible in reference to eternal punishment it is clear that sin will be punished at some point in all of our lives. There is really no clearer way to say it. Daniel 12:2 says, â€Å"Multitudes who sleep in the dust of the earth will awake: some to everlasting life, others to shame and everlasting contempt.† If people would be able to come to the understanding that through Christ they stand a better chance a living forever in him they will begin to seek salvation. (Elwell, 2001) If a person chooses not to accept Christ as their personal Savior and begin to live in him; their life will simply end. From the perspective of annihilationism, these people believe that those who hold that some not all human souls will cease to exist after death. (Elwell, 2001)This point of view has the potential to go three ways: the first being that after death all humans cease to exist anyway, next while all human’s are naturally mortal God imparts to those who are saved b y his Grace a gift of immortality and allows those who do not accept his gift to waste away on Earth, the final form is that humans being created immortal fulfills its destiny in salvation while others fail on their own. Universalism is the doctrine that assumes all men will eventually be reconciled to Christ. (Elwell, 2001) A person from this perspective believes that the â€Å"efficiency of atonement is unlimited and therefore extends to all people. 1st John 2:2 says, â€Å"He is the atoning sacrifice for our sins, and not only for ours but also for the sins of the whole world.† God’s character is incompatible with the idea of eternal suffering for anyone therefore his grace and mercy extends to everyone eventually. (Elwell, 2001) When looking at the three terms Sheol, Hades, and Gehenna, we see three very similar perspectives of Hell. Sheol takes place at an intermediate level. Depending how you lived your life on Earth that was how your soul was dealt with. One of the Hebrew translations of Sheol in the King James Version is â€Å"Hell†. In the Old Testament Sheol is described six ways. (Elwell, 2001) One way in particular is that it’s a â€Å"place where the wicked go upon death. In Psalms 55:15 David prays that his enemies goes there alive. (Elwell, 2001) I think when we look at the â€Å"traditional† concept of Hell, Hades comes close to that ideal. Hades has no doctrine of

Colonialism of Africa essays

Colonialism of Africa essays Although there had been a British and greater European presence in Africa prior to the last two decades of the 19th century it was primarily coastal and revolved around the slave trade. With the abolition of the slave trade within the British Empire in 1803 and a complete abolition of slavery across the empire in 1834 there was little interest in Africa by Britain until the end of the century. This lack of interest in Africa did not include The Cape Colony though, which the British gained at the end of the Napoleonic Wars and which served a key role in outfitting ships on the British trade route to India. The role and importance of Africa to the British soon changed though do to imperial competition with France and Germany. Germany under the aggressive policies of Bismarck set out to take a leading role in Africa and catch up to other European powers such as Britain and France in terms of empire by gaining new control over territory and expanding their spheres of influence. Other important factors made Africa the hot spot for British and European expansion including the discovery of gold in the Transvaal and diamonds in the Orange Free State, the palm oil industry in Nigeria, scientific discoveries such as the way to treat malaria, and the mapping and exploration of the previously mysterious African interior early in the 19th century. In order to explore the nature of British expansion in Africa Porters The Lions Share and T.O. Lloyds The British Empire 1558-1995 are indispensable texts. Using their information on British expansion throughout Africa as a foundation it becomes possible to break down the period of greatest growth between 1880 and 1900 by analyzing British role in Africa prior to 1880, the external roles that competitors such as Germany and France had in forcing Englands imperial hand coupled with the internal economic drives for procuring areas of Africa, and the special case and significance of...

Personal statement MA publishing Example | Topics and Well Written Essays - 500 words

MA publishing - Personal Statement Example I know that there are so many things I still need to learn about especially those which could be handed down to me by experts in the field. Quality training and education are among the reasons for me why I would like to study at University College London (UCL). I value education given by experts not only in theoretical studies but especially those who worked to gain more knowledge and understanding of the theories taught. I understand that UCL offers high quality services from professors of the aforementioned caliber. In addition, it would be an honor to become a part, a learner of one of the world’s top universities which prides itself of achievers. Cultural diversity is another reason why I choose the school because as I really want to indulge myself in media, I know how important it is for me to meet different people from different cultural backgrounds. This would be another angle of my learning experience which would open my eyes to a wider scope of perception. I believe the atmosphere in the school encourages an opportunity for students to lead and excel in their chosen field of specialization and I look for ward to an engaging and highly profitable experience in the school. I graduated Accounting and Finance at the University of Birmingham in 2011, with second class honour degree. I am currently taking Foundation Diploma for Postgraduate Studies at the School of Oriental and African Studies which, in some way propelled me to decide on pursuing MA in Publishing. As mentioned earlier, media is now becoming more and more indispensable and is rather a topmost essential with the development of technology. I am looking forward to landing a job as a marketing manager as my post-graduate study will strengthen my qualifications having graduated Accounting and Finance. If not, I am also inclined to aiming a Public Relations Executive position, which of

Journal 7 Essay Example | Topics and Well Written Essays - 250 words - 6

Journal 7 - Essay Example A non-native exposed to a supportive environment is more likely to learn good English twice as first as a non-native exposed to a less supportive setting. Nevertheless, it is the primary responsibility for the non-natives to work hard to attain good pronunciations and grammar. They should practice on word pronunciations and be ready to learn from the natives. Pronouncing words slowly is a working solution towards overcoming an accent, and it has mutual advantage since the listener can understand, and the speaker perfects on better pronunciations of English words. Non-native speakers experience word selection problems while conversing with the other people. Poor word selection can lead to the listener failing to understanding the speaker or creation of wrong perceptions. The sentences below shows how of wrong pronunciation of words by non-natives create wrong understanding to the listener. Non-native: having a â€Å"desert† makes me happy and I look forward to having one each time. - Most non-natives have problems pronouncing the word dessert and pronounce it as desert that would create a new meaning to the sentence. Avoiding such words and using simple terms is necessary for the non-native to converse clearly. It would have been easier for a non-native to say â€Å"I enjoy taking something different after a main meal† A native speaker would have clearly understood the meaning Non-native: I â€Å"accept† the terms and conditions. – Non-natives have problems pronouncing the words accept and expect and in such a sentence, wrong pronunciation would affect the meaning to the listener. Using a different word such â€Å"I agree with the terms and conditions† would have been easier to pronounce, and the listener would have understood. In conclusion, the people around a non-native speaker can be very influential to how well he/she learns English. Correct choice of words is crucial for the effectiveness of dialogues and better