February 2025

Wind direction and speed

By |2025-02-12T09:14:35+02:00February 12th, 2025|O Level Geography, Weather and Climate|

A cup anemometer and windvane. Image by Noaa.gov. A cup anemometer and windvane. Image by Noaa.gov. ZIMSEC O Level Geography Notes: Wind direction and speed.

Wind is the movement of air across the earth’s surface due to differences in pressure between two regions. Air moves from high pressure regions to low […]

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Sunshine

By |2025-02-12T09:16:02+02:00February 12th, 2025|O Level Geography, Weather and Climate|

A sunshine recorder. Image by Rfuess-Mueller. A sunshine recorder. Image by Rfuess-Mueller. ZIMSEC O Level Geography Notes: Sunshine

  • It has a glass sphere surrounded by a metal frame.
  • On the frame is attached a sensitive card.
  • The sphere focuses the sun’s rays onto the card.
  • As the sun moves across the sky it burns […]
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Weather symbols/ Synoptic Charts

By |2025-02-12T09:28:18+02:00February 12th, 2025|O Level Geography, Weather and Climate|

weather-min

ZIMSEC O Level Geography Notes: Weather Symbols and Synoptic Charts

  • After weather measurements have been taken at weather stations
  • they are then plotted onto synoptic charts.
  • These charts make use of special symbols as a form of pre-agreed shorthand that is used to show the weather conditions at a given place at a […]
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