| A | B |
|---|
| air mass | is air in which temp. and humidity are the same at diff. locations and at same altitude |
| air masses have 2 characteristic regiosn | continental (dry) or maritine (moist) & polar (cold) or tropical (warm) |
| front | a boundary between air masses |
| 3 types of fronts | cold fronts, warm fronts, and stationary fronts. |
| occluded front | occurs when one front overtakes another. the air inbetween is pushed UP. |
| occluded fronts are common in | low pressure systems |
| high pressure system is shown by | isobars (lines on a map that connect places with same air pressure) |
| high pressure systems bring | fair weather |
| low pressure system is shown by | isobars that form closed loops around a local low. |
| low pressure systems bring | stormy weather |
