Download - Chapter 11: Ascending and Descending Air
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Chapter 11: Ascending and Descending AirDifferent weathers
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Low Pressure Systems High Pressure Systems
Low Pressure: Also known as:• Lows• Depressions• Cyclones(Pressure is lowest in the centre)
High Pressure: Also known as:• Highs• Anti-cyclones
(Pressure is highest in the centre)
Weather of a low pressure system:Strong Winds (blowing in towards the centre)Much cloud (caused by warm air rising and condensation)Much Precipitation (condensation causes clouds which usually leads to rain.)
Weather of a high pressure system:Light winds (blow away from the centre)No cloud (no ascending air, no condensation, no cloud)Dry weather (less clouds = less rain)
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Do you know the difference?
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Chapter 11: Main DetailsLow pressure systems:• Recognise on a weather map• Also known as….• Weather of a Low
High pressure systems:• Recognise on a weather map• Also known as….• Weather of a High
WeatherClimateAir MassFrontPolar FrontIsobarsMillibars