present beneath the oceans today). Continental crust would have formed later. It is probable that the Earth’s initial crust was remelted several times due to impacts with large asteroids. The formation of Earth: Delivery of water by icy planetesimals and comets? After condensation of water vapor produced the earth's oceans, thus sweeping out the carbon dioxide and locking it up into rocks, our atmosphere was mostly nitrogen. Kaboom! The formation of the Moon: Currently favored hypothesis: Earth has
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Ryan Bustinza Global Warming Global warming is defined as the rise in average temperature of the Earth’s atmosphere and oceans since the late 19th century. The average temperature of the Earth has increased about 1 and a half degrees, with about two-thirds of the increase occurring since 1980. In general, many scientists believe that the primary causes are greenhouse gases. These greenhouse gases are produced by many human activities such as the burning of fossil fuels, and deforestation.
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OUTLINE Subject: The Effects of Global Warming; the problems of water in the world 1. Introduction 1) Hook: industrial development 2) General Idea: industrial development has caused serious damages to the environment. 3) Thesis statement: Global warming causes negative environmental problems, particularly various problems of water in our lives. 2. Body Paragraph 1) Global warming (1) The reasons of global warming phenomenon (2) The effects of global warming phenomenon 2) The
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English 1012, GW Essay Global warming, by definition is the increase in the Earth's ocean and near surface temperatures. In the last several decades, there have been numerous debates regarding global warming. The vast majority of the scientific community now agrees that global warming is caused by the increase in greenhouse gasses, but there is an ongoing debate on whether the increase is due to human activity or from natural sources, such as volcanoes and forest fires. The controversy gained
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earth is the atmosphere. In this movie, Al Gore says that the atmosphere is quite thin. 2. Describe how global warming occurs. The first step to global warming is that the suns heat waves pass through the atmosphere. The next step, which is the problem, is that some heat waves are trapped by the atmosphere. The earth absorbs most of the radiation but only some of the energy is sent back into space. But as time goes by we are polluting our earth which then thickens the atmosphere that makes Global
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temperatures to rise by trapping excess heat in the earth’s atmosphere. Arrhenius understood that the earth’s climate is heated by a process known as the greenhouse effect. While close to half the solar radiation reaching the earth’s surface is reflected back into space, the remainder is absorbed by land masses and oceans, warming the earth’s surface and atmosphere. This warming process radiates energy, most of which passes through the atmosphere and back into space. However, small concentrations
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scattered with boulders and pulverized dust. Mercury has been geologically dead for a long time according astronomers. The planet has no signs of any type of weather such as clouds, rivers, and dust storms. The planet of Mercury closely resembles Earth's Moon. Mercury's surface shows intercrater plains, basins, smooth plains, craters, and tectonic features. Many of the smooth plains located on Mercury seem to be a result from flood volcanism. Some other features of Mercury geology are vents that are
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certain gases in Earth's atmosphere trap heat. These gases let in light but keep heat from escaping, like the glass walls of a greenhouse. First, sunlight shines onto the Earth's surface, where it is absorbed and then radiates back into the atmosphere as heat. In the atmosphere, “greenhouse” gases trap some of this heat, and the rest escapes into space. The more greenhouse gases are in the atmosphere, the more heat gets trapped. This greenhouse effect is what keeps the Earth's climate livable. Without
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could be the smoke from the exhaust pipe of a car or the gases emitted from the burning of coal (www.greenfacts.org). Secondary air pollutants are those that are not emitted directly but are formed by the interaction of primary pollutants with the atmosphere (www.greenfacts.org). Sulphur dioxide (S02) is a primary air pollutant that occurs most often when coal is burned in thermal energy plants. Sulphur dioxide is one form of air pollution among others that are responsible for smog and acid rain. Carbon
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Divergent Boundaries * Divergent means to split apart. * This creates ocean floors 1) What are the major topography divisions in the north Atlantic * Continental margins, deep ocean basins, and mid-oceanic ridge. * CM: outer margins of all continents and transition to oceanic crust * DOB: b/t the CM and ocean ridge * OR: broad linear swell @ a divergent plate boundary. * Slow spreading center has a rougher terrain than a fast spreading center
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