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

The world’s major fisheries

By Rachel Majaya|2025-02-12T09:20:13+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

World’s Aquatic habitats. Image credit utexas.edu

ZIMSEC O Level Geography Notes: Natural Resources: Fishing:The world’s major fisheries

Fresh water fishing is important in localized communities.
In most cases the world’s fish comes from the ocean.
Most of the world’s productive ocean fisheries are located in the shallow waters of continental shelves […]

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Small scale energy sources and plants:Bio-fuel

By Rachel Majaya|2025-02-12T09:45:20+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Jatropha plant. Image credit jatropha.org.za

ZIMSEC O Level Geography Notes: Natural Resources: Energy:Small scale energy sources and plants:Bio-fuel

is a fuel that is produced through contemporary biological processes,
such as agriculture and anaerobic digestion,
rather than a fuel produced by geological processes such as those involved in the formation of fossil […]

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Sunshine

By garikaib|2025-02-12T09:16:02+02:00February 12th, 2025|O Level Geography, Weather and Climate|

A sunshine recorder. Image by Rfuess-Mueller. ZIMSEC O Level Geography Notes: Sunshine

It has a glass sphere surrounded by a metal frame.
On the frame is attached a sensitive card.
The sphere focuses the sun’s rays onto the card.
As the sun moves across the sky it burns […]

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Weather Hazards

By garikaib|2025-02-12T08:59:03+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes, Weather and Climate|

Floods are just one of many natural weather hazards. Image by The Australian. ZIMSEC O Level Geography Notes: Weather Hazards

Weather hazards are conditions which are unfavorable to people and their activities that result from weather phenomena.
There are […]

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Landforms resulting from intrusive vulcanicity

By garikaib|2025-02-12T09:39:56+02:00February 12th, 2025|Landform Studies, Notes, O Level Geography, Ordinary Level Notes|

Some of the landforms resulting from intrusive vulcanicity. Image by Msnucleus.org ZIMSEC O Level Geography Notes: Landforms resulting form intrusive vulcanicity

Intrusive vulcanicity is the movement of gasses, magma and other materials into the earth’s curst to form interior volcanic […]

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People and Weathering

By garikaib|2025-02-12T09:27:03+02:00February 12th, 2025|Landform Studies, Notes, O Level Geography, Ordinary Level Notes|

Air pollution results in increased incidences of acid rain. Image credit airbetter.org ZIMSEC O Level Geography Notes: People and weathering

How humans influence weather?

Human activities such as industrialisation and driving of cars produce emissions such as sulphur dioxide,nitric oxide […]

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Desertfication

By garikaib|2025-02-12T09:10:12+02:00February 12th, 2025|Hot Deserts, Notes, O Level Geography, Ordinary Level Notes|

Desertification in the arid parts of Kenya. image credit Rascona-of-the-week. ZIMSEC O Level Geography Notes: Desertification

The meaning of desertification

Desertification literary means the making of deserts and several definitions have been offered for the term all expressing this idea.
Desertification refers to […]

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Waterfalls and Rapids

By garikaib|2025-02-12T08:59:30+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes, River Processes|

The Victoria Falls formed by water falling into a faultline. Image credit trekearth.com ZIMSEC O Level Geography Notes: Waterfalls and Rapids

Waterfalls and Rapids

Waterfalls commonly occur in the upper course section of the river although they can occur […]

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Canoes and Dhows

By garikaib|2025-02-12T09:29:12+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Canoes are a popular way of transporting people in Venice. Image credit miriadna.com ZIMSEC O Level Geography Notes: Transport: Canoes and Dhows

They are cheap
clean
They are versatile as they can carry a variety of goods
They are simple to […]

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Hoyt’s Sector model (1939)

By garikaib|2025-02-12T09:01:18+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Hoyt's sector model. Image credit MediaWiki Hoyt’s sector model. Image credit MediaWiki ZIMSEC O Level Geography Notes: Settlements: Hoyt’s Sector model (1939)

February 2025