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15 Cards in this Set
- Front
- Back
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air mass
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large body of air that has the same characteristics of tempeture and moisture contentas the part of Earths surface of which it formed.
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blizzard
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winter storm that lasts at least three hours of 12 C or below, poor visibility with winds of atleast 51 KM.
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dew point
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tempeture at which air is saturated and condensed forms.
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fog
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a startus cloud that forms when air is cooled to its dew point near the ground.
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front
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boundry between two air masses withdiffrent tempeture density or moisture; can be warm, cold, occuled and stationary.
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humidity
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amount of water vapor in the air.
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hurricane
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large, severe storm that forms over tropical oceans, have winds of at least 120 KM and loses power when it reaches land.
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isobars
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lines drawn on a weathermap that connect points having equal atmospheric pressure; also indicate the location of high and low pressure areas and can show wind speed.
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isotherm
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line drawn on a weather map that connects points having equal tempeture.
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meteorologist
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studies weather and uses information from Doppler radar, and weather satallites, computers and other instruments to make weather maps and provide forecast.
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precipitation
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water falling from clouds- including rain, snow, sleet and hail- where form is determind by air empeture.
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relative humidity
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measure of the amount of moisture held in the air compared with the amount it can hold at a given tempeture; can range from 0 percent to 100 percent.
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station model
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indicates weather conditions at a specific location using a combination of sympots on a map.
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tornado
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violent, whirling wind storm that crosses land in a narrow path and can result from wind shears inside a thunder head.
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weather
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state of the atmosphere at a specific time and place, determind by factors including air pressure, amount of moisture in the air, tempeture, wind and precipitation.
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