| A | B |
|---|
| Air Mass | A huge body of air that has similar temperature, pressure, and humidity throughout. |
| Front | The area where air masses meet and do not mix. |
| Occluded | Cut off, as the warm air mass at an occluded front is cut off from the gound by cooler air beneath it. |
| Climate | The average, year-after-year conditions of temperature, precipitation, wins, and clouds in an area. |
| Windward | The side of the mountains that faces the oncoming wind. |
| Leeward | The downwind side of mountains. |
| Greenhouse Effect | The process by which heat is trapped in the atmosphere by water vapor, carbon dioxide, methane, and othe rgases that form a "blanket" around Earth. |
| Global Warming | A gradual increase in the temperature of Earth's atmosphere. |
| Continental | A dry air mass that forms over land. |
| Hurricane | A tropical storm that has winds of 119 km/h or higher typically about 600 km across. |
| lightning | A sudden spark, or energy discharge, caused when electrical charges jump between parts of a cloud or between a cloud and the ground. |
| Maritime | A humid air mass that forms over oceans. |
| Meteorologists | Scientists who study the causes of weather and try to predict it. |
| Polar | A cold air mass that forms north of the 50 degress N latitude or south of the 50 degrees south latitude and has high air pressure. |
| storm | A violent disturbance in the atmosphere. |
| Tornado | A rapidly whirling, funnel-shaped cloud that reaches down from a storm cloud to touch Earth's surface, usually leaving a destructive path. |
| Tropical | A warm air mass that forms in the tropics and has a low air pressure. |
