O Level Geography Archives - Page 7 of 35 - Free ZIMSEC & Cambridge Revision Notes

Longtitude and time calculations

By Rachel Majaya|2025-02-12T09:03:43+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Different Time Zones

ZIMSEC O Level Geography Notes: Transport and Trade : How to calculate time for different countries

A time zone is a region of the globe that observes a uniform standard time for legal, commercial, and social purposes.
Time zones tend to follow the boundaries of countries and their subdivisions because […]

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Sustainable use of tropical rainforests

By Rachel Majaya|2025-02-12T08:55:54+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Tree cutting in the rainforest. Image credit carbonbrief.org

ZIMSEC O Level Geography Notes: Natural Resources: Sustainable use of tropical rainforests

The future survival of humankind depends on sustainable economic growth and development.
This is made possible by putting in place polices and sustainable/conservation programs such as the CAMPFIRE.
The following are […]

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Inland fresh water fishing

By Rachel Majaya|2025-02-12T09:32:36+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Woman fishing in a river. Image credit adventourizim.com

ZIMSEC O Level Geography Notes: Natural Resources: Fishing: Inland fresh water fishing

Subsistence fishing has been and is still practiced in Southern Africa.
Subsistence fishing refers to fishing, other than sport fishing, that is carried out primarily to feed the family and relatives […]

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Sea fishing methods

By Rachel Majaya|2025-02-12T09:19:05+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Hauling in fish during commercial sea fishing. Image credit pinterest.comg

ZIMSEC O Level Geography Notes: Natural Resources: Fishing:Sea fishing methods

The types of fishing methods employed in sea fishing are determined by the type of fish being exploited.
There are two main types of fish found in the oceans of Southern […]

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Nuclear power: Factors affecting location

By Rachel Majaya|2025-02-12T09:36:40+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Pelindaba Nuclear station South Africa. Image credit thinkgeoenergy.com

ZIMSEC O Level Geography Notes: Natural Resources: Energy: Nuclear power: Location factors

The pollution caused by nuclear power plants and the ever present danger of a melt down and nuclear fall-out have made such plants very sensitive in terms of location relative to […]

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Lightining

By garikaib|2025-02-12T09:01:14+02:00February 12th, 2025|Notes, Weather and Climate|

Lightining. Image by GreenSociety. ZIMSEC O Level Geography Notes: Weather Hazards: Lightining

Is typically caused by the physical characteristics of cumulonimbus weather conditions.
As rain drops fall the energy which they have causes a positive charge to develop at the top of a cloud and negative charges to develop […]

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Pressure

By garikaib|2025-02-12T09:09:34+02:00February 12th, 2025|O Level Geography, Weather and Climate|

An aneroid barometer. Image imgkid. ZIMSEC O Level Geography Notes: Pressure.

-is the pressure exerted by the weight of air in the atmosphere of Earth. It is measured in millibars. It is measured using an instrument known as a barometer. There are two different types of […]

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Deliberate Changes to weather: Cloud seeding, Dam construction, Greenhouses

By garikaib|2025-02-12T09:39:25+02:00February 12th, 2025|O Level Geography, Weather and Climate|

Greenhouses are used to grow crops like tomatoes in areas that suffer from frost or during winter. Image via Sustainablenantucket. ZIMSEC O Level Geography Notes: People and Weather: Deliberate Changes

Greenhouses

These are used […]

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Landforms resulting from faulting

By garikaib|2025-02-12T09:31:13+02:00February 12th, 2025|Landform Studies, Notes, O Level Geography|

The Great African Rift Valley. Image by Mamonthsafaris. ZIMSEC O Level Geography Notes: Landfroms resulting from faulting.

Major landforms that result from faulting include:

Block Mountains
Rift valleys
Tilted blocks.

1. Block Mountains The formation of block-mountains (Horst). Image by WikiComons

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Dwala/Ruware/Whaleback

By garikaib|2025-02-12T09:19:08+02:00February 12th, 2025|Landform Studies, Notes, O Level Geography, Ordinary Level Notes|

Dwala/Ruware. Image credit WordPress.com ZIMSEC O Level Geography Notes: Landforms resulting from weathering: Dwala

Known as ruware in Shona, dwala in Ndebele (Nguni languages) and whaleback in English.
An example is Domboshava where several such landforms can be found.
It is a hill or rock which is dome shaped and rises several metres […]

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February 2025