Relier Pairs topic 7 weather part 2 winds and air pressureVersion en ligne match the term to the defintion par Susan Brown 1 difference in air pressure for a specific distance 2 lowest zone of the atmosphere where people live 3 horizontal movement of air parallel to Earth's surface 4 instrument used to measure wind speed 5 easterly moving air at the top of the troposphere; convection cells troposphere jet streams air pressure gradient wind anemometer 1 wind from the direction that is most common at a particular place or season. 2 extreme weather changes caused by the shifting wind and pressure belts in parts of Asia and India; seasonal very high rain and winds 3 high wind speeds 4 low wind speeds 5 cause of spinning directions of winds; counterclockwise in southern hemisphere and clockwise in northern hemisphere 6 series of zones where winds move primarily in a specific direction over time; in the Northern Hemisphere to the right Coriolis effect planetary wind belts far apart isobars prevailing winds steep pressure gradient; close isobars monsoons 1 low pressure with wind blowing toward the center 2 high pressure with wind blowing away from the center 3 in the northern hemisphere highs spin 4 where two air masses of different characteristics meet 5 large body of air in the troposphere with similar characteristics of pressure, moisture and temperature 6 in the northern hemisphere lows spin cyclone front clockwise away from center counterclockwise toward center air mass anticyclone 1 boundary of an advancing cold air mass and a warmer air mass 2 when two adjacent air masses stay in the same place 3 boundary of an advancing warm air mass and a retreating cold air mass 4 boundary of opposing wedges of cold air masses that lift a warm air mass causing mid latitude cyclones 5 ever-changing boundary between the cold air masses of the poles and the warmer air masses of the equator polar front occluded front warm front cold front stationary fronts