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Published byFay Wade Modified over 9 years ago
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http://www.youtube.com/watch?v=1ifoCIFKY XQ
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No Foldable – put in your journals; use markers or highlighters as needed
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There are 3 major forces that determine how strongly the wind will blow and in what direction: 1. Pressure Gradient Force ◦ push from high pressure to low pressure 2. Friction 3. Coriolis Effect
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named for, nineteenth century French engineer Gaspard C. Coriolis Coriolis discovered that a force appears to be operating on any moving object situated on a rotating body, such as a stream of air traveling on the surface of a rotating planet.
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caused by Earth’s rotation right in N. Hemisphere left in the S. Hemisphere appearance to the observer on Earth of the path of a moving object to deflect to the right in N. Hemisphere & to the left in the S. Hemisphere
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also causes low pressure systems to rotate clockwise high pressure systems to rotate counterclockwise
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Degree of deflection depends on how fast the winds are blowing and it’s latitude: ◦ slower the wind speed, the less it will be deflected ◦ faster the wind speed, the more it will be deflected ◦ more deflection at the poles ◦ less deflection at the equator
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From outer space it would appear the winds are moving in a straight line Since you are on earth and it is rotating, it looks to you like the winds are curving There really a change in motion, but that is ONLY because the target or frame of reference is rotating with the earth
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http://www.uwf.edu/atc/projects/coriolis/mai n.swf http://www.youtube.com/watch?v=i2mec3vge aI
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