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GCSE Geography · key term
An area of low atmospheric pressure, associated with rising air and often cloud, rain and unsettled weather.
Used by OCR and Eduqas
Specification 1.3.1, 1.3.2 · Paper 1
An area of low atmospheric pressure, usually bringing unsettled weather with cloud, rain and wind.
Revise: UK Climate and Extreme WeatherAtlantic depressions develop along this boundary and often move towards the UK.
An area of low atmospheric pressure, often bringing unsettled weather, strong winds and rain.
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Specification 5.2.1, 5.2.2 · Component 2
An area of relatively low atmospheric pressure, generally associated with rising air, clouds and unsettled weather.
Revise: Global Atmospheric Circulation and Pressure SystemsLow-pressure systems, or depressions, generally bring unsettled weather because air rises, cools and forms clouds. Heavy rain can overwhelm drainage and cause flash flooding. Prolonged rainfall can also lead to river flooding.
Specification 2.3.1, 2.3.3, 3.1 · Component 1, Component 2, Component 3
An area of relatively low atmospheric pressure, associated with rising air and often cloudy, wet and windy weather.
Revise: UK Climate VariabilityIn a depression, or low-pressure system, air rises. It cools, water vapour condenses, and clouds and precipitation form. Depressions often bring unsettled, wet and windy weather.
An area with lower atmospheric pressure than its surroundings, associated with rising air and often unsettled weather.
An area with lower atmospheric pressure at its centre than in its surroundings.
