January 2023

Faulting

By |2022-09-15T12:44:31+02:00January 24th, 2023|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 |2022-09-15T12:44:16+02:00January 24th, 2023|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 |2022-09-15T12:44:52+02:00January 24th, 2023|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 |2022-09-15T12:44:30+02:00January 24th, 2023|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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Vulcanicity

By |2022-09-15T12:44:29+02:00January 24th, 2023|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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