O Level Geography Archives - Page 9 of 35 - Free ZIMSEC & Cambridge Revision Notes

Sea Ports in Africa

By Rachel Majaya|2025-02-12T09:16:27+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

The port at Cape Town South Africa. Image credit businessmediamags.co.za

ZIMSEC O Level Geography Notes: Transport:Ports in Africa

Siting of ports in Africa

The siting of a port is determined by the physical environment.
Deep estuaries or deep offshore waters are necessary otherwise where the continental shelf is shallow, a lot of […]

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Domestic Trade in Zimbabwe

By Rachel Majaya|2025-02-12T09:09:26+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

A vendor selling his wares

ZIMSEC O Level Geography Notes: Trade:Domestic Trade in Zimbabwe

Zimbabwe’s internal trade (domestic trade) is controlled by processing, manufacturing and marketing of agro-based products.
The flow of goods starts with the producer of raw materials, through to marketing boards, to manufacture, to wholesalers and retailers and […]

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Rehabilitation of mine areas.

By Rachel Majaya|2025-02-12T09:01:33+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

A rehabilitated Zinc mine in Australia. Image credit abc.net.au

ZIMSEC O Level Geography Notes: Natural Resources:Mining:Rehabilitation of mine areas

Land rehabilitation is the process of returning the land in a given area to some degree of its former state, after some process (industry, natural disasters, etc.) has resulted in its damage.

[…]

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World forest resources:Tropical forests

By Rachel Majaya|2025-02-12T09:40:54+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

An aerial view of a tropical rainforest. Image credit MediaWiki

ZIMSEC O Level Geography Notes:World forest resources:Tropical forests

The world’s forests can be divided into three broad classes.
These are tropical, temperate deciduous forests and coniferous forests.

Tropical forests

These are lowland and low latitude luxuriant forests.
They comprise tropical rain forests […]

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Natural Resources: Water quality

By Rachel Majaya|2025-02-12T09:25:55+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Water Quality is important. Image credit goinggreenrecyclingnigeria.org

ZIMSEC O Level Geography Notes: Natural Resources: Water: Water quality

The quality of water can be improved by:

Improving water treatment techniques.
Improving sanitation at household level.
Treating sewage before discharging it in streams and rivers.
Recycling industrial waste.
Use of bio-degradable chemicals in the […]

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Sea fisheries found on the west coast of Southern Africa

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

Recreational fishing off the coast of Namibia. Image credit travelnewsnamibia.com

ZIMSEC O Level Geography Notes: Natural Resources: Fishing:Sea fisheries on the west coast of Southern Africa

Fisheries of the Benguela cold current system cover the area along the west coast of South Africa, Namibia and southern Angola.
The area on the […]

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Geothermal power: Locational factors

By Rachel Majaya|2025-02-12T09:35:41+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

A geothermal station in Iceland. Image credit ucsusa.org

ZIMSEC O Level Geography Notes: Natural Resources: Energy: Geothermal power locational factors

Geothermal power can only be generated in areas of active volcanicity.
These areas are known as geothermal hotspots.
These are zones where volcanic activity underground makes rocks hot and these rocks […]

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Advantages and Disadvantages of Hydroelectricity

By Rachel Majaya|2025-02-12T09:01:03+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

A micro-hydroelectric power station. Image credit abc.net.au

ZIMSEC O Level Geography Notes: Natural Resources: Energy: Advantages and Disadvantages of Hydroelectricity

Advantages

Renewable energy source.
Cheap to maintain as water-transports itself to plants.
Very clean energy source.
Easy to use.
Very versatile, that is many uses.
Large lakes are multi-purpose can also be […]

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Stevenson’s screen

By garikaib|2025-02-12T09:07:02+02:00February 12th, 2025|O Level Geography, Weather and Climate|

An open Stevenson screen showing the instruments it houses. Image by Hubhomedesign. ZIMSEC O Level Geography Notes: Stevenson Screen

A Stevenson screen is a prominent feature on most weather stations.

It is used to house weather instruments, for example the […]

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Weather symbols/ Synoptic Charts

By garikaib|2025-02-12T09:28:18+02:00February 12th, 2025|O Level Geography, Weather and Climate|

weather-min

ZIMSEC O Level Geography Notes: Weather Symbols and Synoptic Charts

After weather measurements have been taken at weather stations
they are then plotted onto synoptic charts.
These charts make use of special symbols as a form of pre-agreed shorthand that is used to show the weather conditions at a given place at a […]

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February 2025