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Unit 6 Vocab Part 2
Stack #206771
| Question | Answer |
|---|---|
| pressure belts | bands of high or low pressure in the atmosphere caused by regions of rising or settling air |
| zones of convergence | region of low pressure |
| zones of divergence | region of high pressure |
| air mass | large area of air within the lower atmosphere having generally the same temperature and humidity at any given level |
| source region | place on earth where an air mass forms |
| cyclone | low pressure air mass with counter clockwise winds in the northern hemisphere, including violent weather, such as tornadoes and hurricanes |
| anticyclone | opposite of a cyclone, having high pressure and clockwise winds in the northern hemisphere |
| front | interface between 2 different air masses, such as the point of contact between warm and cold air masses |
| warm front | interface of and air mass which has warmer temperatures than the preceding cooler air mass |
| cold front | interface of an air mass which has cooler temperatures than the preceding warmer air mass, usually associated with moisture and precipitation |
| occluded front | interface formed when a cold front overtakes a warm front |
| stationary front | interface of two air masses that do not move |
| isotherm field gradient | type of isoline on a weather map showing the expression of the degree of change of a field quantity from place to place |
| pressure field gradient | degree of differences over a specified distance of high and low pressures |
| station model | describes weather conditions at a reporting station |
| synoptic weather map | broad "birds eye view" of the weather |
| storm track | path taken by the center of a storm or low pressure system |
| jet stream | wavelike currents with high winds at upper levels which tend to control storm tracks |
| meteorologist | studies, reports, and forecasts weather conditions |
| thunderstorm | transient, sometimes violent storm of thunder and lightening, often accompanied by rain and sometimes hail |
| hurricane | tropical cyclone with winds in excess of 119km/hr (75mph) |
| eye of the storm | the central area of calm in a hurricane |
| tornado | small, violent storm with a characteristic funnel-shaped cloud |
| vortex | the center of a tornadoes funnel-shaped cloud |
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