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 Atmospheric Pressure and Wind Review

 1 . Atmospheric pressure is measured with __________. 2 . The spacing of isobars on a surface weather map indicates the strength of _________. 3 . Everything else being equal, the greater the pressure gradient force, the greater the ________. 4 . The vertical pressure gradient force and the force of gravity are normally of nearly equal value and operate in opposite directions. This situation is called __________. 5 . The Coriolis force is ______ at the equator. 6 . The Coriolis force acting on any moving object ________ the object’s speed. 7 . Wind speeds are measured with _________ that have rotating cups mounted on a moving shaft. 8 . An elongated zone of high pressure is called a _________. 9 . Air spirals in a ____________ direction into surface cyclones in the Northern Hemisphere. 10 . The wind rotates in a __________ direction around anticyclones in the Southern Hemisphere. 11 . Friction slows the wind at the surface, so that the Coriolis force is less than the pressure gradient force. As a result, the air flows ________ of the pressure gradient force in the Northern Hemisphere. 12 . As a result of the pressure gradient force balancing the Coriolis force, _________. 13 . Surface air pressure is actually ________. 14 . Subgeostrophic flow occurs in the upper atmosphere around ________ systems. 15 . According to the equation of motion, the acceleration of a mass of air is the sum of the accelerations of the pressure gradient, Coriolis force, and ________. 16 . Air above 1.5 km experiences negligible friction and is known as the __________. 17 . The three main forces that determine wind velocity are __________. 18 . The planetary boundary layer exists up to an altitude of approximately _____. 19 . The Coriolis force causes an apparent deflection of the wind _______ in the Southern Hemisphere. 20 . Sea level pressure is used instead of surface air pressure on weather maps because _________. Answer choices in this exercise are randomized and will appear in a different order each time the page is loaded.

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