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Ch.17 and 18 vocab
| Question | Answer |
|---|---|
| air mass | A huge body of air that has similar temperature, humidity, and air pressure throughout |
| tropical | warm, air masses form in the tropics and have low air pressure |
| polar | cold, air masses form north of 50° north latitude and south of 50° south latitude |
| maritime | air masses form over oceans |
| continental | air masses form over land, in the middle of continents, and are dry |
| occluded | cut off, warm air mass at an occluded front is cut off from the ground beneath it |
| front | area where air masses meet and do not mix |
| cyclones | swirling center of low air pressure |
| anticyclones | high-pressure center of dry air |
| storm | violent disturbance in the atmosphere |
| lightning | sudden spark,or energy discharge |
| tornado | rapidly whirling, funnel shaped |