| A | B |
|---|
| Air Mass | A large body of air with a uniform temperature & moisture content |
| Coriolis effect | Deflection of the wind & ocean currents caused by the Earth's rotation |
| Continental polar Canadian | Forms in northern Canada over land that is covered by ice & snow |
| Maritime polar Pacific | Originate over the North Pacific Ocean over the cool waters near Alaska. |
| Maritime polar Atlantic | Form over the North Atlantic & over cool waters of Greenland & Iceland |
| Continental tropical | Form over the North America only in summer |
| Maritime tropical gulf | Form over the warm waters of the Gulf of Mexico & tropical Atlantic Ocean |
| Front | Boundary between 2 air masses |
| Cold front | Forms when cold air mass overtakes a warm air mass |
| Squall line | Long line of heavy thunder-storms that occurs ahead of a fast-moving cold front |
| Warm front | A warm air that overtakes a cooler air mass |
| Stationary front | Forms when two air masses move parallel to the front between them |
| Occluded front | Forms when a fast - moving cold front overtakes a warm front,lifting warm air off the ground |
| Polar front | Boundary at which cold polar air meets the warmer air of the middle latitudes |
| Wave cyclones | Waves along the boundary of a polar front are the beginning of low-pressure storm centers |
| Anticyclone | Storm that spirals outward from high - pressure center |
| Radar | Instrument for determining weather conditions in the atmosphere |
| Hurricane | Sever storm that develops over tropical oceans with strong wind sthat spiral in toward the intensely low - pressure storm center |
| Station model | Clusters of symbols are plotted around,showing the current condition |
| Isobars | Lines drawn to connect points of equal atmospheric pressure |
