February 2025

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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Sand Dunes and Ripples

By |2025-02-12T09:42:27+02:00February 12th, 2025|Hot Deserts, Notes, O Level Geography, Ordinary Level Notes|

Seif dunes. Image credit 7-themes.com Seif dunes. Image credit 7-themes.com ZIMSEC O Level Geography Notes: Sand Dunes

  • As soon as wind velocity drops wind deposition occurs.
  • The heaviest material is deposited first while the finer material and dust is carried further before being dropped.
  • As a result loess (which consists of fine particles) is sometimes […]
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