| A | B |
|---|
| Air Mass | A huge body of air that has similar temperature, pressure, and humidity throughout |
| Tropical | A warm air mass that forms in the tropics and has low air pressure |
| Polar | A cold air mass that forms north of 50 degrees north latitude or south of 50 degrees south latitude and has high air pressure |
| Maritime | A humid air mass that forms over oceans |
| Continental | A dry air mass that forms over land |
| Front | The area where air masses meet and do not mix |
| Occluded | Cut off - example: the warm air mass at an occluded front is cut off from the ground by cooler air beneath it |
| Cyclone | A swirling center of low air pressure |
| Anticyclone | A high-pressure center of dry air |
