February 2025

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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Land-forms resulting from folding

By |2025-02-12T09:24:38+02:00February 12th, 2025|Landform Studies, Notes, O Level Geography, Ordinary Level Notes|

The fold mountains of the Cape are among the most prominent features of folding. Image via AfricanSky. The fold mountains of the Cape are among the most prominent features of folding. Image via AfricanSky.

Land-forms resulting from folding

Several landforms are formed during the folding process including:

  1. Anticlines
  2. Nappe fold
  3. Overthrust
  4. Overfold
  5. Recumbent
  6. Fold mountains

1. Anticline

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Faulting

By |2025-02-12T09:28:52+02:00February 12th, 2025|Landform Studies, Notes, O Level Geography|

Common types of faults. Common types of faults. Image via Noaa.gov ZIMSEC O Level Geography Notes: Faulting.

  • Lateral earth movements often produce very great stresses due to compressional forces (when plates move towards one another) and tensional forces (pulling apart).
  • These forces can cause fractures or breaks in the earth’s crust.
  • When breaks […]
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Wind Action in Deserts: Wind Transport and Deposition

By |2025-02-12T09:38:25+02:00February 12th, 2025|Hot Deserts, Notes, O Level Geography, Ordinary Level Notes|

Wind transportation methods. Image credit apod.com Wind transportation methods. Image credit apod.com ZIMSEC O Level Geography Notes: Wind Action in Deserts: Wind Transport

  • Wind is able to transport (move) sand and dust particles depending on its speed and flow.
  • The effectiveness of wind erosion and transport depend on a number of factors:
  • Aeolian […]
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Depressions

By |2025-02-12T09:22:22+02:00February 12th, 2025|O Level Geography, Weather and Climate|

The characteristics and weather pattern associated with a depression. Image by the BBC. The characteristics and weather pattern associated with a depression. Image by the BBC. ZIMSEC O Level Geography Notes.

Characteristics

  • This is an area of low pressure whose shape on a map is oval or circular.
  • It is represented […]
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Advantages of Rift Valleys and Block Mountains

By |2025-02-12T09:36:35+02:00February 12th, 2025|Landform Studies, Notes, O Level Geography, Ordinary Level Notes|

Yosemite Mountains and Valley. Image by Mountainprofessor. Yosemite Mountains and Valley. Image by Mountainprofessor. ZIMSEC O Level Geography Notes: Advantages of Rift Valleys and Block Mountains

Advantages of block mountains

  • Relief rainfall is common raising the amount of annual precipitation within the vicinity of such mountains.
  • They have a cooler environments which invigorating tends to […]
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