February 2025

Types of industry:Tertiary/Service Industry and Quaternary Industries

By |2025-02-12T09:04:54+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Rainbow Towers Hotel Harare.

ZIMSEC O Level Geography Notes:Industrial Studies: Types of industry:Tertiary/Service Industry and Quaternary Industries

Tertiary or service industries

  • These industries provide back-up services to primary and secondary industries so that their functioning becomes easier.
  • Examples include administration, retailing, transport and distribution, power supplies, health, education and housing.
  • These industries […]
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Railways, ports and inland waterways

By |2025-02-12T09:16:18+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

A Ferry on Lake Malawi. Image credit seabreezes.co.im

ZIMSEC O Level Geography Notes: Transport: Railways, ports and inland waterways

  • Africa’s transport network is the least development in the world for various reason.
  • The continent has some of the world’s poorest nations with very low Gross Domestic Products (GDPs), Gross National Products […]
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Resource Exploitation:Mining

By |2025-02-12T09:27:35+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Open cast mining. Image credit mutapamining.com

ZIMSEC O Level Geography Notes:Resource Exploitation:Mining: Types of Mining

OPEN CAST AND STRIPPING (SURFACE METHODS)

  • The open cast method is used when mineral deposits occur in horizontal seams which are near the surface not more than 50 meters deep.
  • This method involves blasting which is carried […]
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Acacia Savanna Woodlands

By |2025-02-12T09:20:32+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Umbrella/Acacia Tree. Image credit afktravel.com

ZIMSEC O Level Geography Notes: Natural Resources: Zimbabwean Forests: Acacia Savanna Woodlands

  • Acacia trees are also known as umbrella trees due their shape and also the fact that they are usually surrounded by islands of grass often providing the only shade for a distance
  • This type […]
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Human Geography: Hydrological cycle

By |2025-02-12T09:12:47+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

The hydrological cycle. Image credit physicalgeography.net

ZIMSEC O Level Geography Notes:Natural Resources: Water: Hydrological cycle

  • If you are looking for the Hydrological Cycle explanation from Physical Geography please click/tap here.
  • The water cycle replenishes the world’s water resources through rain.
  • Hydro means water.
  • Rain water flows into streams and rivers […]
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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 Oil/Petroleum as a source of energy

By |2025-02-12T08:59:26+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

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

Advantages

  • Has high energy output, an efficient energy source.
  • Relatively cleaner compared with coal.
  • Easy to mine if land-based oilfields.
  • Easy to transport through pipelines.
  • Can be used to power vehicles
  • Relatively cheap.
  • Has a lot of other industrial uses.

Disadvantages

  • Environmentally […]
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