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 Form 1 Geography Online Lessons on Weather

In this lesson we are going to talk about the cyclones and the anticyclones

 (8m 23s)
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Answer Text:
Pressure Systems in the World
1. Cyclone
1.PNG
• It’s a low pressure system characterized by low pressure at the centre and increases outwards.
• Starts in areas where air ascends from the ground to the atmosphere and descends at high altitude.
• It’s of two types.
Tropical cyclones e.g. hurricane, typhoon and willy willies and depressions which are characterized by temperate latitudes.
• The movement of wind is anticlockwise in the N. hemisphere and clockwise in the S. hemisphere.
2. Anticyclone
2.PNG
• A high pressure system characterized by high pressure at the centre and decreases outwards.
• It starts in areas where air is descending from the atmosphere onto the ground and then blows outwards on the ground.
• The movement of wind is clockwise in the N. hemisphere and anticlockwise in the S. hemisphere.


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