February 2025

Effects of deforestation in rural areas

By |2025-02-12T09:24:09+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Deforestation also occurs around urban areas

ZIMSEC O Level Geography Notes: Natural Resources: Forestry:Effects of deforestation in rural areas

  • Deforestation is not limited to communal areas in Zimbabwe but also extends to commercial farming areas and even government protected woodlands.
  • People poach timber for sale in towns as firewood or to […]
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Zimbabwe’s main water sources

By |2025-02-12T09:13:22+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

The Zambezi river. Image credit worldbank.org

ZIMSEC O Level Geography Notes: Natural Resources: Water: Zimbabwe’s main water sources

  • Zimbabwe’s main water sources indicate that most of the country’s major dams are either in the Lowveld or Highveld where suitable dam sites are found.
  • Lake Mutirikwi is one of the largest inland […]
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Problems with inland fishing

By |2025-02-12T09:08:53+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Inland fishing faces a number of problems. Image credit safari365.com

ZIMSEC O Level Geography Notes: Natural Resources: Fishing:Problems with inland fishing

  • The potential of the SADC region’s fisheries is far from being realized because of several problems bedeviling the fishing industry.
  • These include the following:

Sedimentation of rivers, lakes and dams.

  • Most […]
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Energy:The siting and production of Hydro-electric power: Gorges

By |2025-02-12T09:27:59+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Kariba dam wall. Image credit Bloomberg.com

ZIMSEC O Level Geography Notes: Natural Resources: Energy:The siting and production of HEP 

  • Site refers to the actual ground on which something is happening.
  • The siting of a hydro-electric power station depends on a number of physical factors.

Gorge

  • A gorge is a deep narrow […]
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Advantages and Disadvantages of coal as a source of energy

By |2025-02-12T08:58:53+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Burning coal

ZIMSEC O Level Geography Notes: Natural Resources: Energy:Advantages and Disadvantages of coal as a source of energy

 Advantages

  • Relatively high energy amount.
  • Fairly plentiful with global estimate use of 4 000 years.
  • Employment creation in mining, processing, burning and distribution.
  • Has many other industrial uses.
  • Relatively cheap energy source.

Disadvantages

  • Non-renewable […]
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Air Masses

By |2025-02-12T09:07:38+02:00February 12th, 2025|O Level Geography|

World Winds and Pressure Systems. Image by World Winds and Pressure Systems. Image by Wikipedia Air masses

Air Masses

  • An air mass is a large body of air, whose properties – temperature, humidity (air moisture) and lapse rate – are largely uniform (the same) over an area several hundred kilometers across.
  • The regions […]
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The theory of continental drift

By |2025-02-12T09:12:29+02:00February 12th, 2025|Landform Studies, Notes, O Level Geography, Ordinary Level Notes|

Evedence for the continental drift. Image by Wiki Commons. Evidence for the continental drift. Image by Wiki Commons. ZIMSEC O Level Geography Notes: The theory of continental drift

  • The theory of or idea that present day continents were once one single continent.
  • Continental drifts refers to the movement of continents.
  • The theory says that […]
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Earthquakes and their causes

By |2025-02-12T09:05:59+02:00February 12th, 2025|Landform Studies, Notes, O Level Geography, Ordinary Level Notes|

Destruction wreaked by an earthquake. Image credit Telegraph.co.uk Destruction wreaked by an earthquake. Image credit Telegraph.co.uk ZIMSEC O Level Geography Notes: Earthquakes and their causes

  • An earthquake is a shaking, vibration, trembling or movement in the earth’s crust.
  • They are caused by one tectonic plate sliding over or past another plate along […]
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