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a shift in the wind direction DUE TO THE EARTH'S ROTATON
-northern hemisphere,curve to the right, - southern hemisphere,curve to the left |
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| a large wind system around the earth - blow from a specific direction and usually cover longer distance - caused by differences in air pressure - they determine the major weather patterns for the entire globe |
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| surface winds that are calm at the equator (0 lattitude) |
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| located 30 degrees north and south of the equator - in the northern hemisphere they are turned to the right;blow from northeast to southwest |
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| located in a belt from 30-60 degrees latitude in the northern and southern hemisphere - often strong winds - in the nothern hemisphere the air is turned to the left;blow from southwest to northeast |
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| located betwen 50-60 degrees latitude and the poles (90degrees) - cold but weak winds- |
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| a narrow belt of strong, high speed, high-pressure air - travel from west to east and travel up and down not in a regular path - have a major effect on the weather |
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| blow from any directions and usually cover short distances - caused by differences in air pressure |
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| a breeze coming from the sea toward the land |
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| a breeze coming from the land toward the sea |
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| in mountains,3hours after sunrise a valley wind comes from the valley upward along the slope of the mountain - a few hours after sunset, a mountain wind blows down the slope of the mountain - caused from the heating of the mountainsides during the day |
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| a major land and sea breeze that changes direction with the seasons |
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| the weight of the air above the Earth's surface that is pressing down on an area |
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| a device used for measuring air pressure |
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| the amount of change in pressure occuring over a given distance |
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| lines that connect places on a weather map that have the same air pressure |
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| are centers of low pressure |
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| a stormy belt wher subpolar westerlies and polar easterlies meet |
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| a wind that consistently blows from one direction more than from another |
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| instrument to measure wind speed |
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| occurs every 3-7 years, warm countercurrents become unusually strong and replace normally cold offshore waters with warm equatorial waters |
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