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Chapter 12 Vocab ES
Vocab Words
| Term | Definition |
|---|---|
| Weather | Short-term variations in atmosphere phenomena that interact and affect the environment and life on Earth. |
| Climate | The long-term average of variation in weather for a particular area. |
| Air Mass | Large volume of air that has the characteristics of the area over which it forms. |
| Source Region | An area over which an air mass forms. |
| Coriolis Effect | effect of a rotating body that influences the motion of any object or fluid; on Earth, air moving north or south from the equator appears to move right or left, respectively; the combination of the Coriolis effect and Earth's heat imbalance ceates the tra |
| Polar Easterlies | Global wind systems that lie between latitudes 60 degrees North and 60 degrees South and the poles and is characterized by cold air. |
| Prevailing Westerlies | Global wind system that lies between 30 and 60 north and south latitudes, where surface air moves toward the poles in an easterly direction. |
| Trade Winds | Two global wind systems that flow between 30 north and south latitudes, whee the air sinks, warms, and returns to the equator in a westerly direction. |
| Jet Stream | Narrow wind band that occurs above large temperature contrasts and can flow as fast as 185 km/h |
| Front | Boundary between two air masses of differing densities; can be cold, warm, stationary, or occluded and can stretch over large areas of Earth's surface. |
| Thermometer | Instrument used to measure temperature using either the Faherenheit or Celsius scale. |
| Barometer | Instrument used to measure air pressure |
| Anemomter | Weather instrument used to measure wind speed. |
| Hygrometer | Weather instroment used to measure humidity. |
| Radiosonde | Balloonborne weather instrument whose sensors measure air pressure, humidity, temperature, wind speed, and wind direction of the upper atmosphere. |
| Doppler Effect | Change in the wave frequency that occurs due to the relatie motion of the wave as it moves toward or away from an observer. |
| Station Model | Record of weather data for a specific place at a specific time, using meteorological symbols. |
| Isobar | Line on a weather map connecting areas of equal pressure |
| Isotherm | Line on a weather map connecting areas of equal temperature. |
| Digital Forecast | Weather forecast that uses numerical data to predict how atmosphereic variables change over time. |
| Analog Forecast | Weather forecast that compares current weather patters to patterns that occurred in the past. |
Created by:
JCrafton14
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