meridians, or lines of longitudeZero meridian AKA Prime meridian is in Greenwich, EnglandLongitude of any place on earth is how far it is in degrees from the prime meridian up to 180oeast or westoThin. Solid black lines that parallel the equator are called parallels of latitudeLatitude of any place is how far north or south, in degrees, it is from the equator (up to 90o)Areas of high and low pressure, and the swirling air around them, are the major weather producers for the middle latitudesoMiddle-Latitude Cyclonic Storm: forms outside of the tropics and in the Northern hemisphere has winds spinning counterclockwise about its centeroHurricane: a tropical storm system with its swirling band of rotating clouds and surface winds in excess of 64 knots (74 mi/hr)
Center of the hurricane is called the eyeoThunderstorm: tall churning clouds accompanied by lightning, thunder, strong gusty winds, and heavy rainoTornado: an intense rotating column of air that usually extends downward from the base of a thunderstorm with a circulation that reaches the groundSometimes called twisters or cyclonesoWind: horizontal movement of airHorizontal pressure differences create a force that starts the air moving from higher pressure toward lower pressureoWind direction: the direction from whichthe wind is blowingoWind Speed: the rate at which the air is moving past a stationary observeroFront: the boundary that separates the warm and cool air and appears as a heavy, colored line on the mapThere is a sharp change in temperature, humidity, and wind direction here
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- Spring '15