O Level Geography Archives - Page 5 of 35 - Free ZIMSEC & Cambridge Revision Notes

Inland fresh water fishing

By Rachel Majaya|2022-09-15T12:34:55+02:00January 24th, 2023|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|2022-09-15T12:34:43+02:00January 24th, 2023|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|2022-09-15T12:34:34+02:00January 24th, 2023|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|2022-09-15T12:44:39+02:00January 24th, 2023|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|2022-09-15T12:44:57+02:00January 24th, 2023|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|2022-09-15T12:44:42+02:00January 24th, 2023|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|2022-09-15T12:44:30+02:00January 24th, 2023|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|2022-09-15T12:44:20+02:00January 24th, 2023|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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Mesa and Butte

By garikaib|2022-09-15T12:44:12+02:00January 24th, 2023|Hot Deserts, Notes, O Level Geography, Ordinary Level Notes|

Messa (left) and Butte (right). Image credit channingchurch.com ZIMSEC O Level Geography Notes: Mesa and Butte

Mesas and buttes are flat topped uplands with steep sides and often capped by hard resistant rocks.
Mesas and buttes are desert features created primarily by river erosion […]

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Braiding and Alluvial fans

By garikaib|2022-09-15T12:44:00+02:00January 24th, 2023|Notes, O Level Geography, Ordinary Level Notes, River Processes|

Braided River. Image credit patternsofthefuture.com ZIMSEC O Level Geography Notes: Braiding and Alluvial Fans

Braiding

Braiding occurs typically during the dry season when a river’s discharge is greatly reduced.
The river may be split into several channels which rejoin and split again.
These are known as braided river channels.
Rivers […]

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January 2023