Global Warming Prevention Essay Example | Topics and Well Written Essays - 1000 words

Global Warming Prevention - Essay Example Industrialization has caused us to increase the amount of fossil and carbon based fuels we burn. Coal, oil and natural gas are great sources of energy because they produce massive amounts of energy from a small volume of matter. Unfortunately, these carbon-based fuels produce carbon dioxide as a waste product. Carbon dioxide is a green house gas. It traps the earth’s heat and keeps it in the atmosphere much the same way a blanket hold in heat from the human body in a bed. Too much carbon dioxide is like sleeping under a thick blanket on a warm night. Too much heat is trapped, resulting in an uncomfortable situation. A minority of scientists feel that human sources of carbon dioxide have little or nothing to do with global warming. They point to the geologic history of earth and show times that earth was much warmer than it is currently. Interests, such as oil and gas companies, that want to continue to drill for and consume fossil fuels at the current levels, often support the se scientists. Countering these industry scientists are many brave individuals. Al Gore said, â€Å"Scientists around the world are sounding a clear and urgent warning. Global warming is real, it is already underway, and its consequences are totally unacceptable (Anderson, 2009).† Most independent data shows that global warming is being driven by human activity, so the most important thing we can do in this generation is develop practices and technology that lessen human impact on the global climate. The first course of action we must undertake to prevent further warming is to lessen the amount of greenhouse gasses entering the atmosphere. This is not a simple job because much of our modern lifestyle depends on burning fossil fuels. The largest amounts to fossil fuels are burned to transport goods and people and to produce electricity. Reducing the amount of fuel used in these two processes will greatly reduce the amount of carbon dioxide entering the atmosphere. For electric al power generation, we need to derive more of our energy from renewable resources such a wind and solar power. Many electrical power plants burn coal because it is cheap and easy to obtain. Solar and wind power are more expensive because the technology to generate electricity this way is fairly new (Roberts, 1994). Research and development monies must be spent so that photovoltaic solar panels and wind turbines can produce electricity more efficiently. Greater efficiency will result in reduced cost. Some skeptics argue that these technologies only work when the wind is blowing and the sun is shining. They say that this is not reasonable because an energy supply must be constant. Improvements in storing generated electricity in liquid metal batteries will enable sustainably generated electricity to be produced and then stored until needed. This is an example of how technology can overcome current obstacles to electrical power generation. Providing carbon-neutral transportation will be a bit trickier and require more sacrifice. We are many generations away from being able to produce solar powered cars and trucks. Currently, transportation accounts for over 25% of the fossil fuels consumed globally (Collier, 2007). Clear alternatives, such as hybrid vehicles have grown in popularity and are cutting fuel consumption, but global changes have been

Risk Management on Satellite Project Research Paper

Risk Management on Satellite Project - Research Paper Example Therefore, teams are working with risks daily, ranging from risks of inadequate time spending on planning to threats of inadequate supplies, as well as risks of not operating through an adequate program of risk management. The development of the project involves various challenges, with variables such as the component manufacturer, systems integration, dealing with subcontractors, checkups and various factors that fill the projects with risks. Similarly, the team was on the right production timeline and had inadequate available budget resources to maintain cost overruns. Therefore, if the team did not develop a risk plan the members could not be able to manage the project risks and prepare better reactions to potential risks of the project. Dealing with projects risks, challenges, and subsequent alterations that occurred within the program due to risk could be difficult without a risk plan. Managing, project time, strengths, efforts, and resources could also be difficult and ineffective without a risk plan. Risk plan enables the team to create criteria for assessing occurrence possibilities and effects for the threats and for risk prioritization. Without the risk plan, the team could not be able to identify the risks of the project, analyze the potential of developing risks and make decisions upon the required measures to take in risk management. In other words, risk plan enabled all the team members to view the threats, enter new threats and offer solutions for potential reactions to risks. The risk plan significance For the success of the project, it is crucial to creating an integrated strategy and system of risk control. Therefore, a risk plan serves as a tool for identifying and solving existing and potential risks of the project. Risk plan is fundamental for project implementation because it enables the team to predict and manage any potential risks that may constraint the development, running and implementation of the project. Risk plan is a progressive, forward-looking procedure, which is a critical part of the project and technical process of management. Risk plan is crucial to address that concerns that could ruin or constraint the achievement of crucial project objectives. A risk plan adequately anticipates and solves the threats and challenges that have substantial effects on the projects. Risk plan is a crucial management tool to ensure efficient time management during project implementation, effective resource use to ensure project completion within limited budget and wise channeling of efforts and energy towards effective project management and successful reduction of project risks. Risk plan allows cost reduction, effective teamwork and effort scheduling and avoidance of technical risks. It serves as a crucial strategy for project continuity control and a tool for recovery of disaster.

Resistance of a wire Essay Example for Free

Resistance of a wire Essay We undertook an experiment to find the relationship between resistance and a length of wire. Equipment: Variable resister, Wire 1m long, Digital voltmeter, Digital ammeter, 4 X 1. 5 cell, 1m ruler, Connecting wires. Method We collected our equipment needed and set it out as the circuit diagram below. I started by drawing out my results table to record my results on. The headers for the columns where as follows: Length (cm), Current (A), Potential difference (V) and Resistance (I). At every 10cm we took a reading and entered it into our table. Some flickered between two values so I took both down. Starting at 1m and working down. On the second experiment I started at 10cm and worked the other way to see whether it affected the results. When using the variable resistor we kept it on the minimum resistance throughout the experiment. While taking the results we had more than one result for the current and potential difference, which in turn caused some results to have more than one resistance value. Because of this I had to alter our table slightly during the experiment to ensure we took down all the results. To ensure the test was as fair as possible I repeated the test to ensure the experiment was fair and true. Looking at my results in the table they are very similar which proves that it was fair. Results These tables show my results from the experiment and the sum for: V I R First experiment: Length (cm) Current (A) Second reading for (A) Potential difference (V) Resistance ? (I) Second result for (I). Second experiment: Length (cm) Current (A) Second reading for (A) Potential difference (V) Second result for (V) Resistance ? (I) Second result for (I) Third result for (I) Fourth result for (I) I have drawn graphs for these results: see appendix a and b. Analysis My results show that the resistant relates to the length of the wire used. As the current increases the potential difference does and the resistance decreases. As the length of wire is reduced the potential difference reduces and so does the current. There is a slight difference between our first and second experiment. Both graphs show that there is a definite pattern but there are some anomalies. The anomalies seem to be separate from the other results. But this anomaly happened on both experiments on 60cm. There may be some other reason for this. I cannot see why it should happen on both sets of results at the same measurement. Both graphs are similar and follow a very similar line. Graph A shows quite a straight line with only one less extreme anomaly where as graph B show a reasonably straight line with one major anomaly which stand out considerable from the rest. On both graphs the results take a wavelike form rather than a straight line. The results do to an extent follow Ohms law. On graph A, 4 of the plots run on the same line, which agrees with Ohms law, and graph B 4 plots do the same. The second graph started at a lower current and potential difference but I think it should be higher because of the use of the wire before which could have increased the temperature. On the second experiment there was more flickering on the ammeter and voltmeter, which caused the increase in the results. Although the flickering occurred it was constant. On table 1 the potential difference decreased in shorter stages that table 2. When plotting my results on a graph I had to take an average from my results. Conclusion Current id the flow of electrons around the circuit this is pushed by voltage. The resistance tries to oppose it. This is apparent from looking at our experiment results. The resistance stays constant as long as the component does not change its physical condition i. e. The wire does not get hot. George ohm was the first scientist to investigate this theory. The resistance is measured in Ohms Resistance at a constant temperature is proportional to potential difference. The relative size of the voltage and resistance decides how bit the current will be. By increasing the voltage more current will flow but by increasing the resistance the current is less. This is shown in our results. Our results agree with the theory. 100cm of wire = little current but a lot of P. D = lots of resistance 10cm of wire = lots of current but little P. D = little resistance This shows the longer the piece of wire the more resistance Wires of different material have different resistance: Copper wire I Steel wire V The graph shows above that cooper wire has a low resistance and is a good conductor. Steel has a higher resistance and a lower conductivity. Both wires have the same potential difference (voltage) across them. Wire A. I Wire B Wire C V As you can see above different wires have different resistance. Evaluation There were a few problems that occurred in our experiment such as the flickering of the ammeter and voltmeter, which caused us to have to take more than one result. On both graphs there was an anomaly on 60 cm. There may be some other reason for this. Both graphs are very similar and follow a very similar line. Graph A shows quite a straight line with only one anomaly where as graph B show a straight line with one major anomaly which stand out considerable from the rest. On 60cm the potential difference increased on both sets of results. The temperature of the wire was not taken to see whether it had increased in temperature during the experiment. It does not show increased resistance on the second table, which was taken straight after the first experiment, which could have affected it. By taking the temperature of the wire on the same resistance for a period of time we could see how long it takes for the temperature to increase and in turn for the resistance to increase. This could help with evaluating our results and also time the experiment to see how long the wire had current flowing through it and then if it had increased in temperature. The results are reasonably reliable because the do to an extent obey Ohms law. I think the reason for the unreliability could have been because the wire had changed its physical condition (got hotter). To further our investigation we could go on and use a longer piece of wire 2m and also use different types of wire such as steel and copper. Change the temperature of the wire because wire that is colder is a better conductor. I believe our results were reliable but need improving by the suggestions I have given above. Bibliography Hodder and Stoughton AQA GCSE Physics Class notes   CPG Revision and Practice Guide Alison Eatock GCSE Physics 30/11/03 Resistance of a wire 1 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 Electricity and Magnetism section.

Cards of Fortune :: Free Essays Online

Cards of Fortune I suppose in a way Tonia is right, life isn’t worth living, if both of us aren’t there to see it, together. That’s what twins do after all. They are an intrinsical part of each other's life, ceasing to exist without the second. But, I feel that we’re drifting apart, separated by this something, intangible, unnamable, and yet more potent than all of our past put together. I can remember how as little girls we played together. There were no other children with the troupe, and even when we passed the towns†¦ well, the children were never friendly, preferring to fear and call names. But Tonia, she was always there to play with, to laugh with, to cry with. Playing by the fire, dancing under the moon, we were eccentric children, not given to the usual childhood games, preferring instead to talk quietly, and whisper our secrets, but it was always us, together, until now. One of our favorite games was to confuse Septemius, the poor man; he always did have trouble telling us apart. But then, we were children at the time, and not given over to worrying about the troubles of a grown man. Poor, dear, Septemius, even now I can sense his thoughts, and he’s worried, as I am. He knows that Tonia is growing apart from us, and every so often, I’ll catch him looking at her, realizing the distance that’s growing, between her and me, between all of us, and I see that look of daunting sadness in his eyes. I think he sees mother in her, in us rather. I remember the look he gives her now, and it’s the look he had when my mother†¦ left. People tend to think children do not remember such things, that in their happy naà ¯ve lives they don’t understand, but I knew then, as I do now, that mother broke his heart. And as much as Septemius grieves for Tonia’s departure from the family, and through that grieves still for the loss of the woman he once knew, so do I grieve. And, yet, somehow I feel my sadness deeper, a sharper pain, for it is not the loss of an abstract family member, or even a sister, it is the loss of part of myself.

Allegory of the Cave Essay

Written as a dialogue between Glaucon (Plato’s brother) and Socrates (his mentor), The Allegory of he Cave is a poem composed in approximately 1509. The source of this poem is from series on Plato called â€Å"The School of Athens† by Raphael. Socrates had a specialized teaching method (now referred to as the Socratic method) which was characterized by asking and answering questions in order to stimulate critical thinking (EH 72). The structure of this piece reflects this method because Socrates is using dialect and a series of questions to teach the lesson/metaphor. An allegory can be defined as a story, picture, or poem that, when interpreted, has a hidden meaning/lesson. This allegory has to do with a cave in which prisoners are being held captive. They are chained to the floor with their heads only facing one wall, therefore they are unable to see what is behind them. Though this is an allegory because the cave represents life and the puppeteers behind he prisoners making shadows represents reality. The hidden meaning of the allegory stems from the idea that the prisoners have a misinterpreted idea of reality. They only see the shadows and reflections that the puppeteers are making therefore they believe that is life. Once they turn around and it is revealed that those were puppeteers the whole time, they are extremely shocked. It shows us that our perception of reality and what we see around us is false. Our imperfect interpretations of reality may not always be what they seem, sometimes we are viewing what we want to view, seeing what our mind want’s us to see, rather that seeing the true reality. The theme explored in this allegory has connections tied back to the cultural themes of the Hellenic Age and ancient Classical Greek Philosophy. People viewed the enlightenment as a new coming of age in which new teachings were applied. This poem represents the teaching of morality in a time where philosophers were striving to teach of the world around them (EH 84). During the Hellenic period the ancient Greeks were undergoing great  cultural and political change. The love for art and literature rose as ancient Greeks were moving from oral to a literate culture form based on rational thought, which can be exemplified in the poem The Allegory of the Cave. During the Hellenic Age (EH 83), Greek cultural influence was high and the spreading of the arts, literature, philosophy, politics, and education was wide spreading throughout Europe. The Hellenic Age held a high value on learning. Athens held a numerous amount of libraries and philosophy during the time experienced many new and de veloped schools of thought (EH 76). This is viewed through the allegory because it is trying to teach the world a lesson through the use of philosophy. The primary form of art during this period was sculpture and the dominant form of literature was poetry, as again exemplified by the allegory. I personally found the allegory difficult to understand at first, thought after a couple of careful reads of the reading material I began to see the true meaning. I found the allegory to be very interesting and morally informative. I do agree with the ideas it expresses to the extent that it makes a person revisit how they perceive the world around them and the true meaning of reality. I do not believe it should go as far as to change your mindset to question whether you are viewing a true reality or just a mental paradox. Though overall I believe I learned a lot from his allegory and despite the difficulty, thoroughly enjoyed reading it.

Reaction Of Martin Luther Kings Letter From A Birmingham...

â€Å"Letter from a Birmingham Jail† Reaction â€Å"We know through painful experience that freedom is never voluntarily given by the oppressor; it must be demanded by the oppressed.† In 1963, Martian Luther King Jr was protesting for blacks to have equal rights in Birmingham, Al. The city administration found out about these protests and ordered the police to arrest them. Now in jail was confronted by a court and ordered not to protest in Birmingham. In response King wrote what is now known as the â€Å"Letter from a Birmingham Jail†. The letter is considered to be the most important documents of the civil rights movement as it explains Kings strategy of using nonviolent protests to make a point and spark a negotiation. Kings letter started the†¦show more content†¦King then enacted the nonviolent campaign that consisted of four steps. First off, he investigated if injustice exists. This was easily noticed as court and police refused to investigate the bombing of the black homes. The black leaders were mo stly encored by the city’s leaders. Second, he proceeds to negotiate this didn’t go over well. As merchants promised to remove the white and colored signs. The signs soon returned most likely the merchants were treated by the court and the KKK. This leads to the third step; the process of self-purification. The process got the black people in non-violent mindset to accept blows without fighting back and endure a jail cell. The last step was then set in motion direct action marches and sit ins were in full swing. This created tension in society that would eventually lead to the wall surrounding the negations to crack and fall to the ground. This plan worked for King in every city he visited. King explains what a just and unjust law is as â€Å"justice too long delayed is justice denied.†. For 340 years the blacks were denied their constitutional rights as the color of your skin was not mentioned in this great document. Unfortunately, the government pushed segregation in the class rooms therefore many black people had no idea the constitution existed. Not even children could understand why they were denied entry into public places and why white people hated them. Black people lived in constant fear. A law must follow a moral guildShow MoreRelatedLetter from a Birmingham Jail Analysis1025 Words   |  5 Pagesâ€Å"A Letter from Birmingham Jail† by Martin Luther King Jr. was written in the margins of a letter posted by the clergymen of Alabama at this time that sparked his interest and while he inhabited the jail cell for parading around without a permit. This time allowed him the ability to respond wholeheartedly to this cynical oppressing. King’s le tter addresses specific points presented in the Clergymen’s and this direct response distinguishes King’s strong points through his powerful writing.   UnethicalRead MorePersuasive Speech : Dr. Martin Luther King, Jr.1334 Words   |  6 PagesIn any good speech, the most important part of the speech is not what is said during the speech, but what the audience feels and remembers after the speech was over. Dr. Martin Luther King, Jr., a powerful advocate of African American rights, was an expert at convincing his audience to feel and react to his speeches however he wanted them to. One of the main ways he achieved this was through the use of the artistic proofs. The ‘artistic proofs’ is a term coined by the ancient greek philosopherRead MoreLetter from Birmingham Jail; Rhetorical Analysis Essay1620 Words   |  7 PagesMartin Luther King Jr.’s Use of the Rhetoric Triangle Every writer has some sort of drive when writing a piece of work. Whether that drive comes from a creative source or the need to prove a point, it exists. For Martin Luther King Jr. that drive was the need to put an end to racial injustice that seemed to be everywhere. Martin Luther King Jr.’s â€Å"Letter from Birmingham Jail† is a perfect example. â€Å"Letter from Birmingham Jail† was King’s response to eight clergymen’s â€Å"A Call for Unity.† His driveRead MoreMartin Luther King’s (Mlk) â€Å"Letter from Birmingham Jail† Argument Analysis1432 Words   |  6 PagesKyle McCrite Ms. Vaughn English 102-01 14 September 2009 Someone Else’s Shoes Martin Luther King’s (MLK) â€Å"Letter from Birmingham Jail,† was written in 1963 as a response to the Eight Alabama Clergymen’s public statement against King’s actions in April of that year. Martin Luther King Jr. was an activist for desegregation of the south in the early 1960s and overcame much adversity to attain incredible gains on the segregation issue in the United States. King uses effective persuasive appealsRead MoreRhetorical Analysis Of Letter From Birmingham Jail991 Words   |  4 PagesIn the Letter from Birmingham Jail, Martin Luther King Jr. the author makes multiple allusions to philosophers. His comparison make it seem as if he shares likeness with them. King’s work was highly devoted to one thing only, the protection of civil disobedience so that the civil rights movement could go on uncompromised. Although King only had one purpose the complexity of the situation called for unity by eight Alabama clergymen for a decision. In t his way King’s letter served more than the oneRead MoreMartin Luther King Jrs Letter From The Birmingham Jail1437 Words   |  6 Pageshave looked at movement’s that have helped advocate for civil rights. One of the movements of that we looked at specifically in class was Martin L. King Jr’s movement and his â€Å"Letter from the Birmingham Jail†. In this letter, we hear Dr. Kings honest opinion about the criticism he received from his opponents of timely protest. We gain a lot of insight about Kings honest opinion about his political motivations of his movements and why he felt that it was critical to act when he did. Another movementRead MoreRhetorical Analysis Of Martin Luther King Jr s Letter From Birmingham Jail1831 Words   |  8 Pageseffective when all three rhetorical appeals, Logos, Pathos, and Ethos, come together to form an indisputable argument. Dr. Martin Luther King Jr and Malcolm X are two of the most influential figures of the past few decades; similarly, their work is summarized as some of the most persuasive and controversial of all time. The audience of both of their pieces, â€Å"Letter from Birmingham Jail† and â€Å"The Ballot or the Bullet† include oppressed African Americans and the white oppressors themselves. Each man takesRead MoreLetter From Birmingham Jail Essay Essay1451 Words   |  6 PagesZhuo Liu Lauren Sassenoff English 1P-5 25 September 2016 Letter from Birmingham Jail Essay In 1963 Martin Luther King Jr. wrote a letter while incarcerated in Birmingham jail to eight clergymen in response to their letter known as â€Å"A Call for Unity.†Ã‚  The letter asked for the stop of direct action type protest in Birmingham, Alabama that Martin Luther King was leading.   The letter has become known as one of the greatest works of argument in American history. Part of the reason for the letter’sRead More Henry David Thoreaus Civil Disobedience and Martin Luther Kings Letter from Birmingham Jail820 Words   |  4 PagesHenry David Thoreaus Civil Disobedience and Martin Luther Kings Letter from Birmingham Jail Henry David Thoreau and Martin Luther King, in â€Å"Civil Disobedience† and â€Å"Letter from Birmingham Jail,† respectively, both conjure a definitive argument on the rights of insubordination during specified epochs of societal injustice. Thoreau, in his enduring contemplation of life and its purpose, insightfully analyzes the conflicting relationship between the government and the people it governs. He consideratelyRead More The Letter from Birmingham Jail Essay1029 Words   |  5 PagesOn April 16, 1963, from a jail in Birmingham, Alabama, Martin Luther King Jr. composed an extensive letter to eight clergymen who condemned the timing of the civil rights movement. Although the letter was addressed to these eight clergymen, the Letter from Birmingham Jail speaks to a national audience, especially King’s â€Å"Christian and Jewish brothers†(King, 29). His peaceful but firm letter serves as a remarkably persuasive voice to an immensely chaotic mess, a nd is seen as a major turning point

Changes in Arabic Societies During teh 20th Century

The early 20th century saw major changes in Arabic societies, which initiated a new cultural order that changed the lives of men and women alike. The sweeping changes associated with this period were catalyzed by a massive immigration from the countryside into the rapidly expanding urban centers of the region. There exist a variety of contributing factors to this migration: systems of land inheritance that fragmented land into smaller parcels (decreasing an already declining income per capita); the world-wide economic crisis of the 1930s that further crippled the income of farmers, and the disappearance of sustainable jobs. As a result, millions of rural dwelling peoples flocked to the cities where the prospect of employment was most probable. The population of cities such as Cairo grew at an even faster rate than that of the country itself, surging from 800,000 to 1,300,000 between 1917 and 1937 ( Hourani 335). This rapid increase led to a change in the layout of the cities, form ing a variety of different, class-dividing quarters. Furthermore, the inter-mingling of a variety of different cultures and nationalities in these major urban centers stimulated the formation of a new era of social norms, especially in Muslim societies. During this time of expansion, the general population became more literate, necessitating a large increase in the number of books issued and printed. Literature of all kinds was provided to a hungry audience, including textbooks, works of