natural resources Archives - Page 3 of 10 - Free ZIMSEC & Cambridge Revision Notes

Water as a renewable resource

By Rachel Majaya|2025-02-12T09:12:23+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Water is a critical life resource.

ZIMSEC O Level Geography Notes:Water as a renewable resource

Water covers over two-thirds of the earth’s surface.
It is found in oceans, seas, lakes, rivers, ice caps, glaciers and in underground aquifers.
Of the world’s most abundant water resources, only 3% is fresh water and […]

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Fishing in Lake Kariba

By Rachel Majaya|2025-02-12T09:07:45+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Sun drying fish on Lake Kariba. Image credit yahoo.com

ZIMSEC O Level Geography Notes: Natural Resources: Fishing:Lake Kariba

It was constructed on the Kariba gorge between 1955 and 1959.
The dam has produced a lake with a surface area of 5 364 km².
Commercial fishing on Lake Kariba begun in 1962.

[…]

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Classification of energy sources

By Rachel Majaya|2025-02-12T09:27:09+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Natural Gas flame. Image credit money.cnn.com

ZIMSEC O Level Geography Notes: Natural Resources:Energy: Classification of energy sources

One way of classification is by grouping energy sources into traditional and modern sources.

Some sources and types belong to both groups.
For example canoeing down a river uses the force of the moving […]

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Possible measures to solve the energy crisis in Zimbabwe

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

Cahora Bassa Dama Mozambique.Image credit zambezitraveller.com

ZIMSEC O Level Geography Notes: Natural Resources: Energy:The energy crisis in Zimbabwe:Measures

Measures have been put in place to try to resolve the energy crisis in Zimbabwe. These include:

Imports of electricity from countries overproducing it for example from South Africa through the Insukamini interconnector near […]

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Problems being faced by the Mining Industry in Zimbabwe

By Rachel Majaya|2025-02-12T09:37:58+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Abandoned mine. Image credit wenxuecity.com

ZIMSEC O Level Geography Notes: Natural Resources: Problems being faced by the Mining Industry in Zimbabwe

Disinvestment by TNC after 1980 resulted in some mine closures and creation of ghost towns.
For example are Kamative and Mhangura.
Some mine closures are also as a result of […]

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Zimbabwe’s forests: Mountain forest and grassland

By Rachel Majaya|2025-02-12T09:20:46+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Bananas and other crops have replaced natural vegetation in some areas. Image credit zadt.co.zw

ZIMSEC O Level Geography Notes: Zimbabwe’s forests: Mountain forest and grassland

This is found in the Eastern Highlands of Zimbabwe.
Temperature are generally below 20°C while rainfall is over 1 500 mm.
The altitude is generally above 1 […]

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Human Geography: Hydrological cycle

By Rachel Majaya|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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Fishing in other parts of Zimbabwe

By Rachel Majaya|2025-02-12T09:08:06+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

A Zimbabwean fisherman attempts to land his catch. Image credit deseretnews.com

ZIMSEC O Level Geography Notes: Natural Resources: Fishing:Other fisheries in Zimbabwe

Both commercial and subsistence fishing also takes place in Zimbabwe’s internal dams.
The major ones include Lake Chivero and Manyame on the Manyame river and Lake Mutirikwi on the […]

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Hydro-electric power

By Rachel Majaya|2025-02-12T09:27:38+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

A hydro-electric power station. Image credit MediaWiki

ZIMSEC O Level Geography Notes: Natural Resources: Energy:Hydro-electric power

At a hydro-electric power plant, water leaves the lake or reservoir at high pressure (speed) and goes through pen stocks (concrete or steel pipes) to the turbines in a power house underground.
The force of […]

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Africa’s Energy Resources

By Rachel Majaya|2025-02-12T08:58:20+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Old Inga Dam DRC. Image credit internationalrivers.org

ZIMSEC O Level Geography Notes: Natural Resources: Energy:Energy resources of Africa

Electricity is generated from two major processes, thermal and hydro.
The thermal component includes petroleum on top of coal for a number of countries such as Egypt, Algeria, Nigeria and Libya.
For other […]

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February 2025