| A | B |
|---|
| storm | a violent disturbance in the atmosphere |
| Warm Front | warm air moves over cold air-move slowly and bring warm, humid air |
| Cold Front | cold air moves under warm air forcing the warm air to rise-move quickly and bring cold dry air |
| Occluded Front | warm air is caught between two cold fronts--causes many clouds and precipitation |
| Stationary Front | when cold and warm air meet and neither is strong enough to move the other-brings many days of bad weather |
| Air Mass | a huge body of air that has a similar temperature, humidity and air pressure |
| Anticyclones | high-pressure centers -dry air--lead to clear weather |
| Cyclones | a swirling center of low pressure air |
| Tornado | a rapidly whirling funnel-shaped cloud that touches downto the earth's surface |
| Hurricane | a tropical storm that has winds of 119mph or higher |
| Precipitation | rain, snow , sleet |
| Lightning | a sudden spark or energy discharge between the parts of a cloud or between the cloud and the ground |
| Storm Surge | a "dome" of water that sweeps across the coast where a hurricane lands |
| Evacuation | move away temporarily |
| Tropical Air Mass | warm, low pressure air masses formed in the tropics |
| Polar Air Mass | cold, high pressure air masses formed in the polar regions |
| flash flood | sudden violent flood that occurs within a few hours or minutes |
| meteorologist | scientist who studies the causes of weather and try to predict it |
| Isobars | lines joining places on the map that have the same air pressure |
| isotherms | lines joining places on the map that have the same temperature |
