Hot Deserts Archives - Free ZIMSEC & Cambridge Revision Notes

Wadis,Bahadas and the Desert Piedmont zone

By garikaib|2025-02-12T09:05:01+02:00February 12th, 2025|Hot Deserts, Notes, O Level Geography, Ordinary Level Notes|

Alluvial fan/Bajada/Bahada. Image credit MediaWiki ZIMSEC O Level Geography Notes: Wadis and Bahadas

Wadis/Canyons

As already pointed out freak storms occur in deserts characterised by excessive precipitation over short periods of time.
Due to infiltration excess flow and even saturation excess flow there is significant run off in the […]

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Mesa and Butte

By garikaib|2025-02-12T09:06:32+02:00February 12th, 2025|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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Playas

By garikaib|2025-02-12T09:07:39+02:00February 12th, 2025|Hot Deserts, Notes, O Level Geography, Ordinary Level Notes|

A playa. Image credit bergoiata.com ZIMSEC O Level Geography Notes: Playas

These are sometimes known as inland drainage basins.
Due to the fact that there are no permanent drainage patterns in deserts any rain that falls either evaporates or infiltrates into the soil or runs off and […]

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Human activities in deserts

By garikaib|2025-02-12T09:09:35+02:00February 12th, 2025|Hot Deserts, Notes, O Level Geography, Ordinary Level Notes|

Oil drilling in a desert. Image credit Foxoildrilling.com ZIMSEC O Level Geography Notes: Human Activities in Deserts

In spite of their hostile enviroments brought about by aridity leading to shortage of water, pasture, wood fuel and other wood resources, remoteness, infertile and salty […]

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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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Characteristics of Hot Deserts

By garikaib|2025-02-12T09:28:03+02:00February 12th, 2025|Hot Deserts, Notes, O Level Geography, Ordinary Level Notes|

Kalahari Desert. Image credit HDImageLib ZIMSEC O Level Geography Notes:Characteristics and Location of Hot deser

NB:It is important to note that the Ordinary Level syllabus confines our study to hot deserts that are otherwise known as tropical deserts. Other deserts such as the cold deserts of […]

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Methods of preventing desertification

By garikaib|2025-02-12T09:13:03+02:00February 12th, 2025|Hot Deserts, Notes, O Level Geography, Ordinary Level Notes|

Badia Dam in the midst of a desert. Image credit Broadleap.org. ZIMSEC O Level Geography Notes: Methods of preventing desertification.

The following methods can be used to prevent and slow down the rate of desertification:

Afforestation that is planting trees where […]

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Location and Causes of Hot Deserts

By garikaib|2025-02-12T09:31:05+02:00February 12th, 2025|Hot Deserts, Notes, O Level Geography, Ordinary Level Notes|

A map showing the location of the world’s major deserts. Image credit English-Online.net ZIMSEC O Level Geography Notes: Location of Hot Deserts.

The largest arid and semi-arid deserts occur between latitudes 15° and 30° North and South of […]

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Wind in deserts

By garikaib|2025-02-12T09:34:16+02:00February 12th, 2025|Hot Deserts, Notes, O Level Geography, Ordinary Level Notes|

A sandstorm in a desert. Image credit annechia.com ZIMSEC O Level Geography Notes: Wind in Deserts

Wind is responsible for eroding, transporting and depositing materials in deserts.
To learn more go to Wind Action in Deserts.
Various landforms are formed by the above processes. […]

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