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morgan lee

on 14 September 2009

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Transcript of Geography

What isWeather BasicsWeer Weather Basics What is the difference betweenweather and climate? The dictionary defines climate as "the weather conditions prevailing in an area in general or over a long period". The dictionary defines weather as "the state of the atmosphere at a place and time". The difference between the two are that a climate is the type of weather offer a period of time. How ever the weather is the type of weather in a cretin place at a cretin time. What is a Synoptic Chart? A synoptic chart is a chart showing meteorological conditions over a region at a given time; weather map Isobars and Pressure The dictionary defines isobars as a line on a map connecting points having the same atmospheric pressure at a given time or on average or a given period. The dictionary defines pressure as the continuous physical force exerted on or against an object by something in contact with it. High pressure is when the sky is clear and blue and sunny. Low pressure is when it is cloudy and overcast. A cold front is defined as the transition zone where a cold air mass is replacing a warmer air mass. Cold fronts generally move from northwest to southeast. The air behind a cold front is noticeably colder and drier than the air ahead of it. When a cold front passes through, temperatures can drop more than 15 degrees within the first hour. Fronts A warm front is defined as the transition zone where a warm air mass is replacing a cold air mass. Warm fronts generally move from southwest to northeast and the air behind a warm front is warmer and more moist than the air ahead of it. When a warm front passes through, the air becomes noticeably warmer and more humid than it was before.
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