78 lines
4.4 KiB
Plaintext
78 lines
4.4 KiB
Plaintext
ÜÜÜÜÜÜÜÜÜÜÜÜÜ ÜÜÜ ÜÜÜÜ
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ÜÛÛÛÛÛÛÛÛßÛßßßßßÛÛÜ ÜÜßßßßÜÜÜÜ ÜÛÜ ÜÛÛÛÛÛÛÛÛÜÜÜÜÜÛßß ßÛÛ
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ßÛÛÛÛÛÛÛÛÛÛÛÛÛÛÜ ßÛÛ ÜÛÛÛÜÛÛÜÜÜ ßÛÛÛÛÜ ßÛÛÛÛÛÛÛÜÛÛÜÜÜÛÛÝ Ûß
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ßßßÛÛÛÛÛÛÛÛÛÛÜ ÞÝ ÛÛÛÛÛÛÛÛÛÛÛßßÛÜÞÛÛÛ ÛÛÛÛÛÜ ßßÛÛÛÞß
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Mo.iMP ÜÛÛÜ ßÛÛÛÛÛÛÛÝÛ ÞÛÛÛÛÛÛÛÛÛ ÞÛÛÛÛ ÞÛÛÛÛÛÝ ßÛß
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ÜÛÛÛÛÛÛÛ ÛÛÛÛÛÛÛÛÝ ÞÛÛÛÛÛÛÛÛÝ ÛÛÛ ÛÛÛÛÛÛ
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ÜÛÛÛÛÛÛÛÝ ÞÛÛÛÛÛÛÛÛ ÞÛÛÛÛÛÛÛÛ ß ÞÛÛÛÛÛÛÜ ÜÛ
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ÜÛÛÛÛÛÛÛÝ ÛÛÛÛÛÛÛÛ ÛÛÛÛÛÛÛÛÝ ÞÞÛÛÛÛÛÛÛÛÛß
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ÜÛßÛÛÛÛÛÛ ÜÜ ÛÛÛÛÛÛÛÛÝ ÛÛÞÛÛÛÛÛÝ ÞÛÛÛÛÛÛßß
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ÜÛßÛÛÛÛÛÛÜÛÛÛÛÜÞÛÛÛÛÛÛÛÛ ÞÛ ßÛÛÛÛÛ Ü ÛÝÛÛÛÛÛ Ü
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ÜÛ ÞÛÛÛÛÛÛÛÛÛÛß ÛÛÛÛÛÛÛÛÛ ßÛÜ ßÛÛÛÜÜ ÜÜÛÛÛß ÞÛ ÞÛÛÛÝ ÜÜÛÛ
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ÛÛ ÛÛÛÛÛÛÛÛß ÛÛÛÛÛÛÛÛÛÛÜ ßÛÜ ßßÛÛÛÛÛÛÛÛÛß ÜÜÜß ÛÛÛÛÜÜÜÜÜÜÜÛÛÛÛÛß
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ßÛÜ ÜÛÛÛß ßÛÛÛÛÛÛÛÛÛÛÜ ßßÜÜ ßßÜÛÛßß ßÛÛÜ ßßßÛßÛÛÛÛÛÛÛßß
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ßßßßß ßßÛÛß ßßßßß ßßßßßßßßßßßßß
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ARRoGANT CoURiERS WiTH ESSaYS
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Grade Level: Type of Work Subject/Topic is on:
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[ ]6-8 [ ]Class Notes [Essay on Mechanical ]
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[x]9-10 [ ]Cliff Notes [Energy ]
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[ ]11-12 [ ]Essay/Report [ ]
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[ ]College [ ]Misc [ ]
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Dizzed: 09/94 # of Words:497 School: ? State: ?
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ÄÄÄÄÄÄÄÄÄ>ÄÄÄÄÄÄÄÄÄ>ÄÄÄÄÄÄÄÄÄ>Chop Here>ÄÄÄÄÄÄÄÄÄ>ÄÄÄÄÄÄÄÄÄ>ÄÄÄÄÄÄÄÄÄ>ÄÄÄÄÄÄÄÄÄ
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Have you ever wondered how a jet aircraft lifts its tremendous weight
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off the ground, or what gives a runner the stamina to reach the finish line
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in a race? In order to answer all these questions we must talk about the
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transformation of one sort of energy into another.
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The jet aircraft gets its power from jet turbines. These powerful jet
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engines create a high©pressure stream of very hot gases that push the
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aircraft forward as they leave the engine. This is an example of heat
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being transformed into movement. This is sometimes described as Mechanical
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Energy. However, this transformation could not take place without the fuel
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that the aircraft gets within its wings or fuselage. Fuel is considered a
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chemical energy.
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Fuel can take the form of gases, solids or liquids. When fuels combine
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with oxygen from the air, they release their stored energy as heat. We
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recognize this process as burning. The individual relies on food for fuel
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which contains energy©giving substances that our bodies can store until we
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need this energy to use our muscles. When we do use our muscles within us,
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we may not always be sure that heat is given off. Our bodies do not burst
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into flames but the perspiration on our skin is a clue to what is
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happening.
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The movement of the windsurfer has a different explanation. The
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windsurfer is propelled along by a sail which collects mechanical energy
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from the winds that sweep along the water. This energy has been produced
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by the sun which warms the earth's surface and sets the air above in
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motion. The sun's heat comes to the earth as a form of radiant energy.
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When the heat reaches the surface of the earth, it causes the land or seas
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to rise in temperature.
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The sun is very hot. Infact, the center of the sun can reach
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temperatures of up to 27 million degrees Fahrenheit. This is because of
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another kind of energy reaction where new substances are continually being
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created as others are being destroyed. This reaction is known to us as the
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Nuclear Reaction. Today we are trying to imitate this reaction in
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improving our energy supply. Scientists have calculated that the sun has
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enough fuel to go on producing energy at its present rate for about five
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billion years.
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On earth man-made nuclear reactions are used to produce a form of power
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we know as electricity. Electricity can be transformed into other kinds of
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energy such as heat, light and radio waves. Humans have also used the idea
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of nuclear reactions as a type of weapon. We call this powerful weapon the
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Atomic Bomb. Electrical energy can also be used to produce laser beams.
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This involves energy being concentrated to a specific narrow point where
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the impact of so much power creates heat able to cut through metals.
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Bibliography
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Discovering Energy, Frazer, Frank Trewin Copplestone Books Ltd, 1981.
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Encyclopedia Britannica, Vol. 6 Encyclopedia Britannica, 1979.
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