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? warmer air mass Answer: lows have counterclockwise circulation, rising air, & fronts ? * In which direction do the prevailing winds push weather systems across the U.S.? * Which front has cooler air pushing out warmer air? Answer: front types are 1.warm 2.cold 3.stationary 4.occluded (* cold front has cooler air pushing out warmer air) Low pressure systems cause air to rise. What happens to air temp when air rises? ? * High pressure systems cause air to sink (descend). What happens to air temperature when air descends? Answer: air cools when it rises (* air warms when it descends) Which pressure system, high or low, has clockwise circulation, no fronts, descending air, and no clouds ? ? cooler air mass ? warmer air What are the names of the three major wind belts? ? * Which major wind belt pushes weather systems in the U.S. from west to east? Which pressure system circulates in a counterclockwise direction? ? * Which pressure system circulates in a clockwise direction? Answer: lows circulate counterclockwise (* highs = clockwise) Answer: cold front symbol = polar bear teeth (* warm front symbol = turtle shells) ? The diagram shows cooler air pushing out warmer air. What type of front is shown? Answer: trade winds, prevailing westerlies, polar easterlies (* prevailing westerlies push weather from west toward east) * Which front has a symbol that looks like turtle shells? What are 4 different types of fronts? ? Which prevailing wind belt pushes weather systems across the U.S.? Answer: a cold front is shown Which front has a symbol that look like polar bear teeth? Answer: prevailing westerlies push weather systems across U.S. (* from west toward east is the direction the prevailing westerlies) L cooler air Answer: a warm front is shown. Which pressure system, high or low, has counterclockwise circulation, fronts, and rising air ? ? The diagram shows warmer air pushing out cooler air. What type of front is shown? Ans: highs circulate clockwise, no fronts, no clouds, descending air