| A | B |
|---|
| air mass | large body of air with uniform temperature and moisture content |
| anemometer | measures wind speed |
| anticyclone | storm that spirals outward froma high pressure |
| bi-metal strip | instrument used to measure temperature, consisting of a bar made of two strips of different metals that curves when heated and straightens when cooled |
| cold front | boundary formed where a cold air mass overtakes and lifts a warm air mass |
| continental polar | discribes a cold, dry air mass that forms over land in polar regions |
| continental tropical | discribes a warm, dry air mass that forms over land in tropical regions |
| thermometer | measures temperature |
| front | boundary between two air masses |
| hurricane | severe storm that develops over tropical oceans, with strong winds that spiral in toward the intensely low-pressure storm center |
| isobar | line drawn on a weather map connecting points of equal atmospheric pressure |
| maritime polar | discribes a cold, moist air mass that is formed over the ocean in polar areas |
| maritime tropical | discribes a warm, moist air mass that is formed over tha ocean in tropical areas |
| occluded front | boundary formed where a fast-moving cold air mass overtakes and lifts a warm air mass, completely cutting it off from the ground |
| polar front | boundary at which cold polar air meets warmer air of the middle latitudes |
| radar | device that can detect objects and weather conditions in the upper atmosphere by sending and receiving radio waves |
| squall line | long line of heavy thunderstorms that may occur just ahead of a fast-moving cold front |
| station model | a cluster of weather symbols plotted on a map indicating the weather conditions at a particular reporting station |
| stationary front | a boundary formed where two air masses meet neitheris displaced |
| barometer | an instrument that measures atmospheric pressure |
| thunderstorm | a strom accompanied by thunder, lightning, and strong winds |
| tornado | a whirling, funnel-shaped cyclone that touches ground and causes great distuction |
| typhoon | a hurricane that forms over the Pacific Ocean |
| warm front | a boundary formed where a warm air mass overtakes and rises over a cold air mass |
| waterspout | a tornado that occurs over the ocean |
| wave cyclone | a large strom that develops alog cold or stationary fronts, with winds that spiral in toward a central region of low air pressure |
| weather vane/ wind vane | an instrument used to dertermine the directiion of the wind |
| rain gauge | an instrument used to measure the amount of rainfall |
| psychronmoeter | an instrument used to measure relative humidity |
| climate | general weather conditions over many years |
| Santa Anna | air coming down from mts. and heating atiobaticaly |
| Chinook | warm winds that flow down the eastern slopes of the Rockies |
