describe the major levels of structure (such as planet‚ star‚ galaxy) in the universe. Planet: (a) Orbits a star‚ (b) large enough for its own gravity to make it round‚ (c) has cleared most other objects from its orbital path. Sun: The star of our solar system. Star: Large‚ glowing ball of ignited gas that generates heat and light through nuclear fusion in its core. Galaxy: A great island of stars in space‚ containing a few hundred million or trillion stars held together by gravity‚ orbiting a
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The Effects of Gravity There are some people who worry that when they ’re outside‚ if they don ’t keep a good grip on the ground‚ they ’ll just go flinging off into space. They needn ’t really worry about this‚ because gravity generally keeps that sort of thing from happening. The thing is‚ no one is really sure what causes gravity‚ but the effects have been studied by many physicists and astronomers. Three of the more obvious effects of gravity are things falling down‚ weight
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Energy Management and Audit Report 1) Introduction For over the past few years‚ the planet Earth is being damaged by human activities. Buildings play a major role in that. They contribute to approximately 40% of the greenhouse gas emissions globally. Over the past 30 years‚ 10% of the ice burgs have been melted due to the rising temperature of Earth. The rise in temperature is caused by greenhouse gas. Therefore‚ green building is important today. Green building has both positive and negative
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sources of Energy" In the not-too-distant future -- with regard to history’s time-line -- there will come a point when oil that is fossil fuels will have been depleted. However‚ waiting until supplies are exhausted would place a major hardship upon future energy demands. Even the existence of other conventional sources such as hydropower‚ wind energy and biomass will not suffice keeping in mind the rapid advancement. It is therefore imperative to look for alternative sources of energy in order to
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Energy is needed by the body to stay alive‚ grow‚ keep warm and move around. Energy is provided by food and drink. It comes from the fat‚ carbohydrate‚ protein and alcohol the diet contains. Energy requirements vary from one individual to the next‚ depending on factors such as age‚ sex‚ body composition and physical activity level. Energy expenditure is the sum of the basal metabolic rate (the amount of energy expended while at complete rest)‚ the thermic effect of food (TEF‚ the energy required
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Energy Resources and its Management First Mr. Ankit Kumar Sharma‚ Second Mr. Arpit Kapoor‚ and Third Mr. Anil Kumar Yadav ankit_krishnaa@yahoo.in‚ arpitknp@gmail.com‚ anilyadav07@rocketmail.com Assistant Professor‚ Deptt. Of Electrical Engg.‚ JNU‚ Jaipur; Final Year‚ Electrical Engineering‚ JNU Jaipur; Final Year‚ Electrical Engineering‚ JNU‚ Jaipur ABSTRACT The present energy needs of the world are supplied by the drastic use of non-renewable sources of energy‚ which are mainly the
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Heather Smith Informative Outline Michelle Talasis Topic: Solar Energy General Purpose: To inform Specific Purpose: To inform the uses of Solar Energy to my audience. Thesis: When all of our natural fossil fuels are low or gone‚ solar energy will be one of the leading sources of energy that we will need in the future. Introduction Attention Getter: Natural fossil fuels‚ such as coal used for burning‚ oil used for gasoline‚ and natural gas used to heat and warm houses
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or I should say my heroes - EXO. EXO is a music band from Korea and China; there are 12 members‚ which are separated into two subgroups‚ EXO-K and EXO-M. Their name was taken from the word ’exoplanet’‚ a term referring to planets outside of the solar system. In their music video‚ each of them has a special ability‚ such as ice‚ which can freeze everything; healing ability; teleportation; flying as a dragon; mind control and so on. I think they are heroes because they are not only good at singing
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Energy is the fuel that runs the engine of the world economy. Believe it or not our need for energy is not primarily to run economies but intrinsically to create order in the world. Wind energy Wind energy is the kinetic energy associated with the movement of atmospheric air. It has been used for hundreds of years for sailing‚ grinding grain‚ and for irrigation. Wind energy systems convert this kinetic energy to more useful forms of power. Wind energy systems for irrigation and milling have been
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Energy Conservation What can we do to help Carol D. Patterson Axia College University of Phoenix March 7‚ 201 Introduction I am doing my essay on energy conservation. I would like to point out the good and the bad points of energy conservation. What could happen if we do not start conserving the different kinds of energy we have left? What are the different kinds of energy? How might we put into practice the different kinds of energy? In my paper‚ I will explain these forms
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