Background/History on the Wind Power Industry The wind power industry first developed in Iran around 200 B.C. The first windmills were vertical axis wind turbines‚ which were used for pumping water and grinding whole grains for food consumption. The Chinese‚ Romans and Afghans all used windmills around this time for similar use. In the 13th century Holland started developing large horizontal axis windmills. These four-blade windmills were larger‚ carried more torque and wind speed and could do more
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billion barrels of oil left in earth‚ and 80 million barrels of oil are consumed per day¹. According to these statistics‚ if our society keeps consuming oil at this rate‚ earth’s oil will only last 16‚925 more days‚ or 46.5 years (as of Jan. 1 2010)¹. To combat this growing issue‚ many alternative sources of energy have been developed. Popular alternative energy sources include geothermal power‚ tidal power‚ hydroelectric power‚ solar power‚ nuclear power and wind power. A highly controversial source
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A windmill is a machine that converts the energy of wind into rotational energy by means of vanes called sails.[1][2] Originally‚ windmills were developed for milling grain for food production. In the course of history‚ the windmill machinery was adapted to many other industrial uses.[3] An important non-milling use is to pump water‚ either for land drainage or to extract groundwater. Contents [hide] * 1 Windmills in antiquity * 2 Horizontal windmills * 3 Vertical windmills * 3.1 Post
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changes in Earth’s orbit and tilt‚ volcanic activity‚ human activity. 2. How orbital changes may affect climate? Ans. When Earth’s orbit is elliptical‚ Earth encounters more variation in energy from the Sun. The tilt of the Earth’s axis also changes. When the tilt decreases‚ temperature differences between seasons decreases. Wobbling of Earth changes the direction of tilt and can reverse the seasons. 3. How changes in CO₂ concentrations affect global temperatures. Ans. Carbon dioxide is a greenhouse
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The Fire “Is this a dream?” I thought to myself. Looking off into the vast emptiness‚ the only thing surrounding me was darkness. It was a cold October night; all was hushed except for the gentle breeze sweeping through the trees whispering my name. The chillness of the stale air gave me shivers from head to toe and at that moment I felt unsafe. Suddenly‚ I spotted a glowing light off in the distance‚ and knowing it was my only chance of safety I ran towards it. As I approached this mysterious
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• Forests Forests is not just made of trees but also animals and micro-organism. Throw into the mix the non-living‚ abiotic components like soil‚ climate and water‚ and take in the complex interrelationships among the organisms and the environment‚ and we are closer to an actual understanding of this ecosystem. With one third of the Earth’s surface is covered with forests it is no surprise that they are among the most notable storehouses of biological diversity on the planet. Forests have a
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red‚ and his nose was red‚ especially when he had a cold. Everything was red‚ even his little finger. Luckily‚ his wife was green—though when she stood beside him he seemed redder than ever and about to catch fire. One winter’s day a storm came storming. It was a snow storm‚ and the wind howled‚ the trees flopped back and forth‚ and the snow fell in flakes as big as plates. O‚ the world was so beautifully white when the storm stopped. It looked so pure and inviting that King Red went walking
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History Assignment #2 Water was more important to the development of a working civilization in Ancient Egypt than Mesopotamia for the following reasons: irrigation‚ drinking‚ resources and trade. Although these factors were used by both Egypt and Mesopotamia‚ the latter had a better understanding and control over water than Mesopotamia. Mesopotamia (3500 B.C.E. - 530 B.C.E.) was located in northeast Syria‚ which is now know today as Iraq. It was mainly surrounded by water‚ most notably the Tigris
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Renewable sources of energy Wind energy Wind Energy‚ energy contained in the force of the winds blowing across the earth’s surface. When harnessed‚ wind energy can be converted into mechanical energy for performing work such as pumping water‚ grinding grain‚ and milling lumber. By connecting a spinning rotor (an assembly of blades attached to a hub) to an electric generator‚ modern wind turbines convert wind energy‚ which turns the rotor‚ into electrical energy. Because wind is a clean and renewable
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“Coyote won the game and so I gave him the fire. But he cheated‚ and for that I shall take his life.” This was said by Thunder-god in the short story “Coyote Steals Fire” when Coyote cheated in the game against the fire. This tale as well as “How Stories Came to Earth” are trickster tales‚ meaning the main character plays tricks on others to achieve their goal. These tales are told as oral folktales involving tricksters. Both of these stories are similar to one another due to them being tricksters
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