February 2025

Vulcanicity

By |2025-02-12T09:37:43+02:00February 12th, 2025|Landform Studies, Notes, O Level Geography, Ordinary Level Notes|

Violent volcanic eruption. Image by Dailymail. Violent volcanic eruption. Image via Dailymail. ZIMSEC O Level Geography Notes: Vulcanicity

  • Vulcanicity refers to all the various way by which molten rock and gasses are forced into the earths and onto its surface.
  • It includes volcanic eruptions which lead to the formation of volcanoes, lava plateaus and geysers.
  • It […]
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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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Cyclones

By |2025-02-12T09:28:16+02:00February 12th, 2025|O Level Geography, Weather and Climate|

The formation of a cyclone. Image via Imagarcade. The formation of a cyclone. Image via Imagarcade. ZIMSEC O Level Geography Notes: Cyclones

Features of a cyclone.

  • These are systems of intense low pressure.
  • There are sometimes known as hurricanes (the U.S and the American continents) and typhoons( in Asian countries).
  • On a map the […]
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Landforms resulting from intrusive vulcanicity

By |2025-02-12T09:39:56+02:00February 12th, 2025|Landform Studies, Notes, O Level Geography, Ordinary Level Notes|

Some of the landforms resulting from intrusive vulcanicity. Image by Msneucleus.org Some of the landforms resulting from intrusive vulcanicity. Image by Msnucleus.org ZIMSEC O Level Geography Notes: Landforms resulting form intrusive vulcanicity

Intrusive vulcanicity is the movement of gasses, magma and other materials into the earth’s curst to form interior volcanic […]

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