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Weather Air Movement Convection Currents Weather Weather Forecasting Mixed Review 10 10 10 10 10 20 20 20 20 20 30 30 30 30 30 40 40 40 40 40 50 50 50 50 50 Convection currents in the atmosphere Wind Air pressure __________ as you move up through Earth’s Atmosphere. Increasing Part of the earth where temperatures are warmest because the sun’s rays strike at a more direct angle. Equator Wind and storms are caused by differences in air speed and ________. temperature Air pressure is a result of ________. Electricity Weight of air pushing down on an area. Atmospheric pressure The rising and sinking of matter in a circular pattern caused by temperature differences. Convection Currents A large body of air with similar properties all through it is an _______. Air Mass A boundary between two air masses. Front Wind that spirals inward around an area of low pressure. Cyclone Most weather moves from _____ to _____ over North America. West to East A funnel cloud that has touched the ground. Tornado Weather that gets their energy from warm air over land. Hurricane. A wind that changes direction with the season. Monsoon Spot in the middle of a hurricane where winds are gentle. Eye Doppler radar is very useful for tracking _________. Tornadoes A tool that measures the amount of rain that has fallen. Rain Gauge The tool that measures the amount of moisture in the air. Hygrometer A tool that measures air pressure barometer A tool that measures wind speed. anemometer The higher up in the atmosphere you go the air pressure _______. decreases The air mass from this area is cold and fairly dry, very little water evaporates from the land. Continental Polar Air This air mass forms over the ocean near the poles where it is cold, but relatively moist. Maritime Polar Air A front that doesn’t move very much, or it moves back and forth over the same area.. Stationary front Winds that spin in the opposite direction of a cyclone. Anticlone