...Think about a time when your car was parked in the middle of a parking lot, in the middle of the day. The minute you opened the car door, you must have felt currents of hot air blowing past you. The moment you sat down, you might have felt as if your car was burning the heat! This is a small, yet effective example of a process called the GREENHOUSE EFFECT. This effect involves a certain body of matter, be it a car, or a green house in which plants are grown, or the earth itself GRIPPING heat or radiation from another body, in our case – the sun. In case of the car, the glass enables the assimilation of the heat, and traps the heat inside, and does not let it out. Similarly, the earth's atmosphere contains certain gases called GREENHOUSE GASES such as Carbon Dioxide or water vapor or Ozone or Methane, which absorb the radiations we receive from the sun, and trap the heat from it inside. In other words, our atmosphere, which contains the green house gases acts like a blanket; it absorbs heat from the sun, and prevents the heat inside from going away from the earth's surface. The more greenhouse gases in the atmosphere, the more the heat gets trapped, the more the temperature rises. This phenomenon of increase in the average temperature of the Earth's near-surface air and oceans is called GLOBAL WARMING. So, what if the temperature rises? Due to global warming, there are serious, profound consequences that occur. These include: 1. Increased evaporation of water, which...
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...Greenhouse effect From Wikipedia, the free encyclopedia Jump to: navigation, search A representation of the exchanges of energy between the source (the Sun), the Earth's surface, the Earth's atmosphere, and the ultimate sink outer space. The ability of the atmosphere to capture and recycle energy emitted by the Earth surface is the defining characteristic of the greenhouse effect. Another diagram of the greenhouse effect The greenhouse effect is a process by which thermal radiation from a planetary surface is absorbed by atmospheric greenhouse gases, and is re-radiated in all directions. Since part of this re-radiation is back towards the surface and the lower atmosphere, it results in an elevation of the average surface temperature above what it would be in the absence of the gases.[1][2] Solar radiation at the frequencies of visible light largely passes through the atmosphere to warm the planetary surface, which then emits this energy at the lower frequencies of infrared thermal radiation. Infrared radiation is absorbed by greenhouse gases, which in turn re-radiate much of the energy to the surface and lower atmosphere. The mechanism is named after the effect of solar radiation passing through glass and warming a greenhouse, but the way it retains heat is fundamentally different as a greenhouse works by reducing airflow, isolating the warm air inside the structure so that heat is not lost by convection.[2][3][4] If an ideal thermally conductive blackbody was the...
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...Topical Topic : Greenhouse Effect General purpose : To inform Specific purpose : To inform my audiences that the causes of greenhouse effect. Central idea : The causes of greenhouse effect are deforestation, burning of fossil, farm animals, fertilizer and electrical appliances. INTRODUCTION: I. If I ask you, what is greenhouse effect, what is the first thing across in your mind? II. The greenhouse effect is the warming of the Earth by trapped gas in the atmosphere. III. The gases present in the atmosphere refer to the term “greenhouse gases”. A. What are the greenhouse gases? B. How those gases bring to greenhouse effect? IV. However, there are several causes of the greenhouse effect. V. Today I will explain these causes to you. (Transition: We will start by looking at the deforestation.) BODY: I. Deforestation is one of the causes of greenhouse effect. A. Deforestation increases the amount of carbon dioxide in the atmosphere. 1. Photosynthesis cannot take place due to the disappearance of trees. B. Deforestation is also due to the burden of our needs on land. 1. With the increase in population, more and more forests are being cut to provide accommodation. C. Burning of forests for the purpose of deforestation will definitely increase the carbon dioxide. (Transition: We will move to the next causes of greenhouse effect.) II. Burning of fossil is another cause of greenhouse effect. A. Greenhouse gases can also be released...
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...The Greenhouse Effect Introduction Greenhouse effect refers to an atmospheric process by which short wavelenghts of the visible light from the sun pass through the atmosphere where they are absorbed or trapped. However, part of light emitted from the sun in form of long wave is re-radiated from heated objects on the earth’s surface in to the atmosphere. Presence of greenhouse gases in the atmosphere does not allow the radiations to pass through. The greenhouse gas molecules are more complex than any air molecule and their structure has high heat absorption capacity. The heat radiated back to the earth’s surface to modulate its temperature. According to Parsons, this process is essential in order to support life. if this does not occur, the temperatures on the earth surface would be below freezing point and plant or animal life would be supported. However, human activities in the past centuries have increased the concentration of greenhouse gases in the atmosphere which in turn have increased the average temperature on the earth’s surface. Greenhouse gases include water vapor, carbon dioxide, nitrous oxide and methane. According to a report released by IPCC in 2007, there was a significant increase in production of greenhouse gases between the 19th and 20th century. However, in the context of this paper greenhouse effect will be deciphered via different notions. Discussion Increase in Effect Increase in population has led to increased transportation and manufacturing. This...
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...Greenhouse Effect Greenhouse effect? What does greenhouse effect really means? According to Turnbull (2006), greenhouse effect is “the warming of earth’s atmosphere as a result of harmful gases in the air” (p. 325). It could be devastating if we let it to continue developing in our earth. We can reduce its existence even at our very own home. The 3R’s of environment, save electricity and also reducing the emission of harmful gases can reduce the level of greenhouse effect from our own home. Firstly, saving electricity at home is one of the ways to decline the level of greenhouse effect. According to Chong (2007), approximately 72% of electricity contributes to greenhouse gases. Just by turning off lights or fan when they are not in use by any people can reduce the temperature hence, reducing the level of greenhouse effect. Plus, installing solar panels on the rooftop of our houses to heat up our home and water can be a very effective way to save the use of electricity. Generally, use less electricity at home will bring down the percentage of this effect to happen. Secondly, reduce the emission of harmful gases can help shrink greenhouse effect. To illustrate, households should exclude the option of disposing their rubbish through opening burning in the lawn because burning of rubbish will emit harmful gases such as carbon monoxide and nitrous oxide. In addition, refrigerants in air-conditioners and refrigerator also help the growth of greenhouse effect as it releases...
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...Marissa N. Mahigab Joana May B. Apolonio BEE 3-2 Mamasapano probe will prove Pnoy didn’t do anything to save SAF men, says Enrile Minority Leader Juan Ponce Enrile on Monday vowed that he will prove that President Benigno Aquino III not only was “actively and directly” involved in the planning and preparation of the Mamasapano operation, but that the chief executive did not do anything to save the 44 members of the Philippine National Police-Special Action Force who were killed during the incident. The veteran senator made the pronouncement on Monday with little more than a week before the resumption of the Senate investigation into the incident, which Enrile pushed the Committee on Public order to reopen. “So that there will be no more questions whether we should reopen the probe or not, I would like to make manifestation that I have evidence that the President, Benigno Aquino III actively and directly involved himself in the planning and preparation of Oplan Exodus,” said Enrile as committee chairman Senator Grace Poe sought clarification on the Senate Rules Committee decision to reopen the probe. Enrile said that on the day of actual preparation, the president was monitoring the operations while going to Zamboanga City. “While the operation is going on the SAF units were being slaughtered, he did not do anything at all to save them. I’m going to prove this with evidence in the hearing, “said Enrile. When sought for comment, Communication Secretary Herminio Coloma...
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...Global Warming: Fact or Fiction By Lorrie Fontanilla Professor John Hargiss BUSN300-1202B-55 April 27, 2012 Introduction: I. Definition of Global Warming A. What is Global Warming The Green House Effect Who is Responsible for Green House Emissions Debates on Global Warming A. Opposing Viewpoints 1. What do Scientists Agree on What do Scientists Disagree on Evidence of Global Warming A. Climate Changes 1. Melting Polarized Caps * 2. Rise in Sea Level * IV. Summary and Conclusion * A. Strategies to Abate Global Warming * 1. Individual Efforts * 2. Energy Conservation and Efficiency * 3. Political Position Global warming: fact or fiction Global warming is one of the most eminent scientific topics of the twenty-first century stimulating the precise configuration of society. Global warming inherently means there is a rise in temperature when the earth heats up. It sounds unpretentious in its term; however, it is an extremely complicated subject. It occurs when greenhouse gases; (carbon dioxide, water vapor, and methane) entrap the sun’s warmth and radiance in the earth’s environment which initiates temperature increases. (Global Warming, n.d.) The greenhouse effect is a result from the sunlight’s heat energy that is consumed by the earth and atoms in the earth's environment. This energy is customarily emitted in the direction towards space. However; due, to domestic living changes, the gases...
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... Earth is in a stage called global warming. Global warming is the rise in the average temperature of the Earth’s atmosphere and oceans. Since the late 19th century, scientists have been warning the world that due to the increase of greenhouse gases in the Earth’s atmosphere, it is causes the Earth to undergo changes that are not good for humans or the planet. Some these increases are being caused by human activities such as burning of fossil fuels and deforestation. The Earth’s temperature had increased 0.8 degrees Celsius over the past 100 years and with about 0.6 degrees of this warming in the past three decades (National Research Council 2011). The effects of this increase in temperature cause the sea levels to raise, changes in the amount and pattern of precipitation, as well as an expansion in the subtropical deserts. Warming is expected to be the strongest in the Arctic from the continuing break in the glaciers, permafrost, and sea ice. Some other effects of the warming would be heat waves, droughts, heavy rainfall, or even extensive snow in some areas. It messes with seasons which cause the plants to bloom earlier, but the temperature changes vary over the globe that is what causes the extreme weather differences. The green house effect is the process by which absorption and emission of...
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... The Global Warming is not occurring evenly. The effect is high in the poles especially the Arctic. We know the Globe is warming from thermometers placed at various points in the Earth. This gives data from about 1830’s to current day. The oldest thermometer employed to find the atmospheric temperature was from Germany. But the disadvantage is we can go back only 200 years or so. To find the facet of climate before those periods, we use ICE. Ice cores from Antarctica and Greenland are drilled and studied. As snow falls on Earth, which is mostly Ocean, it sinks in due to higher density and so the deeper we drill the Ice cores from, the older the temperature records we will end up analyzing. How do we do this study? Water is made of Hydrogen and Oxygen. There are types of Oxygen, one that weighs 16 and one that weighs 18. These are Atomic weights. This makes the molecules’ weight different. Water that is heavier condenses more readily and water that is lighter evaporates more readily. So near Equator, where the temperature is high the lighter oxygen evaporates more readily as we move to the poles the concentration of Heavier oxygen decreases compared to the concentration of Lighter Oxygen by 5%, since the temperature is lower at the poles and the light water evaporation is reduced. So when you take the ice core from various depths and analysis the ratio of Heavy water to Light water we can figure out the temperature effect. If we take a ice core from the surface of the water...
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...Assignment 1 1. What are greenhouse gases and why do they affect the climate? At what wavelength band(s) of the electromagnetic spectrum do they absorb radiation? In your answer, give three examples of greenhouse gases and their wavelengths of absorption. Greenhouse gases are gases in the atmosphere that allow light through but block infrared radiation that is reflected off of Earth’s surface, not allowing the heat to escape and thus causing long term heating effects on our climate. The greenhouse gases absorb some incoming light but the greenhouse effect is cause by the absorption of infrared radiation on its way out to space. Three greenhouse gases are water vapour methane and carbon dioxide. Water vapour has its strongest absorption at wavelengths of 2.9, 1.95, 1.45, but also absorbs at many other wavelengths. Methane absorbs radiation between 1.41-4.24 micrometers whereas carbon dioxide absorbs between 14-16 micrometers. 2. An environmental engineer invents a new machine that removes carbon dioxide (CO2) from the air using hydrogen fuel cells. In the process, however, a large amount of water vapour (H2O) is released back to the atmosphere. Explain three plausible impacts that this machine could have on the global climate (some of which may counteract each other). The first effect would be the climate cooling. The removal of the carbon dioxide means that there would be less greenhouses gases and this would result in less radiation being trapped thus causing the...
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...globalized. There is no country that can escape from globalisation. With globalisation, many countries get benefits from it. However, it also caused many negative effects from globalisation in many countries. As the ancient Chinese Philosopher Laozi said: “Good fortune follows upon disaster; Disaster lurks within good fortune; Who can say how things will end? Perhaps there is no end.” So it is natural to oppose globalisation. There are many arguments from different views. Some political scientists argue that globalization is making nation-states weaken and that the functions and power of nation-states will gradually take over by global (Dreher et al.,2008). Economists argue that businesses is becoming more competitive and more and more workers may be laid off due to greater competition. For environment, globalization is using up finite resources more quickly and globalization increases world greenhouse gas with carbon dioxide emissions which makes the air pollution worse. For cultural, the uniqueness of cultural is lost in favour of homogenization and a "universal culture" that draws heavily from American culture. In this essay, I will focus on economics and environment aspect to discuss why people and some groups oppose to globalisation. In the global world, there are both positive and negative effects of globalisation for economics of developed and developing countries. McMichael (2001) stated that globalization can create a lot of new opportunities, new ideas,...
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...Water Management 1) Describe Water Management and Use a) Freshwater sources b) Water supply problems c) Water conservation d) Water use 2) Effects of Water Use and Management Practices on the Environment a) Short-term effects b) Long-term effects b. Three Major Types of Environmental Pollution 1) Identify Type One a) Causes b) Treatments c) Effects on ecosystem health d) Effects on human health 2) Identify Type Two a) Causes b) Treatments c) Effects on ecosystem health d) Effects on human health 3) Identify Type Three a) Causes b) Treatments c) Effects on ecosystem health d) Effects on human health c. Global Warming 1) Background a) Describe the Earth’s atmosphere. b) Describe the Earth’s energy budget. 2) Global Warming Concepts a) What makes the Earth warm? – Explain the greenhouse effect. b) What natural greenhouse gases are associated with the greenhouse effect? c) What anthropogenic greenhouse gases contribute to global warming? 3) The Future a) Predicted climate, weather, and ocean changes of increased global warming b) Potential environmental, ecological, and societal effects from increased global warming c) Provide evidence that supports or refutes increased global warming predictions and effects. 4) Prevention a) How might global warming be mitigated? b) What can you do to decrease the effects of global warming? c) What political constraints might influence decisions on global warming? d) As a global society, how can nations and individuals...
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...35000 years or so of relative constant temperature. After that, the temperature dropped steadily until around 15000 years ago, after which it began to rise sharply, with only a small decrease in the rate of increase in the past 2000 years. Hence, from figure 1 alone, we can see that the rate of change in the Earth’s global average temperature has been increasing over the past 15000 years, and even though the rate of change decreased somewhat during the past 5000 years or so, the worldwide average temperature is still on the rise. Therefore it is true that the rate of change could be potentially a concern to scientists. However, temperature is not the only climatic factor that is changing rapidly today. Concentrations of greenhouse gases in the atmosphere have increased sharply over the past two centuries, and this is in fact the cause of the increase in average...
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...house effect is the scientific belief that the earth is slowly getting hotter. Most scientists believe that this is due to the fact we have been polluting the atmosphere with damaging gases such as carbon dioxide, sulphur and methane. These gases have been building up in our atmosphere. When the sun shines on the earth its rays normally hit our planet and reflect back into space, however the gases we have polluted into our atmosphere often reflect the rays of light back onto the planet – thus heating it. If the world temperature rose by a mere degree Celsius hundreds of cities across the world would flood. Part of the ice-caps would melt meaning the water-level would rise by at least 10 metres and animals that rely on the ice as a habitat (such as the polar bear) would become extinct. Some scientists disagree with the theory of global warming as the temperature of the earth has been like this before humans polluted the atmosphere, in fact the temperature of the earth has been in a pattern over the past 300 million years. The pattern has been in an up and down wave, currently we are at the peak of a high in the average temperature of the planet. An ice-age is periods of time were the average earth temperature falls which results in the ice-caps expanding out further south/north (depending on the poles). According to this definition we are still technically in an ice age as the Greenland and Antarctic sheets are still present. Many scientists believe that greenhouse gases...
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...temperatures. These changes are damaging the environment and agricultural production, threatening wild species into extinction, and putting at risk human lifestyle, health, and cities near the sea. It starts with the warming. In the Artic, reports of heat waves and droughts seem far away. Over the last 100 years, the world has seen a 1 degree Fahrenheit rise in its average temperature (2). However, in Alaska and Canada, winter temperatures have increased by as much as 5-7 degrees Fahrenheit in the past 50 years (2). Global warming is already having a noticeable impact on the Artic. In November 2004 the Artic Climate Impact Assessment’s report on “Impact of a Warming Arctic (2004) was released (2). The ACIA report determined that greenhouse gases had driven climate change. Changes are being experienced particularly intensely in the Arctic; Arctic average temperature has risen at almost twice the rate as the rest of the...
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