| A | B |
|---|
| maritime tropical air mass | warm, moist air from over oceans |
| maritime polar air mass | cold, moist air from over oceans |
| continental tropical air mass | warm, dry air from over land |
| continental polar air mass | cold, dry air from over land |
| cold front | formed from rapidly moving cold air moves into slow moving warm air |
| warm front | forms when moving warm air mass collides with slowly moving cold air mass |
| stationalry front | two air masses face each other in a "stand off" |
| occluded front | warm air mass is caught between two cooler air masses |
| cyclone | swirling center of low air pressure, in Greek it means "wheel" |
| anticyclones | high pressure cneters of dry air, HIGHS on a weather map |
| thunderstorm | heavy rainstorms accompanied by thunder and lightning, form in cumulonimbus clouds |
| lightning | a sudden spark or energy discharge |
| tornado | a rapidly whirling, funnel-shaped cloud that reaches down from a storm cloud |
| hurricane | a tropical storm that has winds of 119km/hr or higher |
| storm surge | a dome of water that sweeps across the coast where the hurricane lands |
| flash flood | a sudden, violent flood that occurs within a few hours or minutes of a storm |
| meteorologists | scientists who study the causes of weather and try to predict it |
| isobars | lines joining places on the weather map that have the same air pressure |
| isotherms | lines joining places that have the same temperature |
