February 2025

Rainfall

By |2025-02-12T09:31:12+02:00February 12th, 2025|O Level Geography, Weather and Climate|

Rainfall. Image via the Herald. Rainfall. Image via the Herald. ZIMSEC O Level Geography Notes: Rainfall.

  • Rainfall is just one form of precipitation.
  • Precipitation occurs when warm moist air rises or is forced to rise.
  • Water vapor in the air parcel cools and condenses to form clouds.
  • This is because temperature falls with increase […]
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Benefits and Problems of Volcanoes

By |2025-02-12T09:04:37+02:00February 12th, 2025|Landform Studies, Notes, O Level Geography, Ordinary Level Notes|

Fertile volcanic soil Kenya. Image credit tishaferral.com Fertile volcanic soil Kenya. Image credit tishaferral.com ZIMSEC O Level Geography Notes: Benefits and Problems of Volcanoes

Benefits of volcanoes to humans

  • They eject lava and ash which in turn produce very fertile soils which boost agriculture activities.
  • Volcanoes and areas near them can […]
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Wind Action in Deserts: Wind Transport and Deposition

By |2025-02-12T09:38:25+02:00February 12th, 2025|Hot Deserts, Notes, O Level Geography, Ordinary Level Notes|

Wind transportation methods. Image credit apod.com Wind transportation methods. Image credit apod.com ZIMSEC O Level Geography Notes: Wind Action in Deserts: Wind Transport

  • Wind is able to transport (move) sand and dust particles depending on its speed and flow.
  • The effectiveness of wind erosion and transport depend on a number of factors:
  • Aeolian […]
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Pipelines

By |2025-02-12T09:33:29+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Pipeline under construction. Image credit MediaWiki Pipeline under construction. Image credit MediaWiki ZIMSEC O Level Geography Notes: Transport: Pipeline

Advantages

  • They are very efficient
  • They are cheap once the installation has been completed.
  • They can carry fluids in bulk.

Disadvantages

  • They are immobile i.e the route cannot be changed once they are installed.
  • Can only carry fluids […]
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Possible solutions to Urbanisation problems

By |2025-02-12T09:44:46+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Murambinda Growth Point. Image credit newsday.co.zw Murambinda Growth Point. Image credit newsday.co.zw ZIMSEC O Level Geography Notes: Settlements:Possible solutions to Urbanisation problems

  • Most LEDCs such as Zimbabwe struggle with urbanisation problems
  • This is because most countries cannot cope with the rapid rate of urbanisation
  • as the rate of industrialization and economic growth is […]
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Causes of Rapid Population change and the effects of rapid population change

By |2025-02-12T09:06:15+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Hopely Farm settlement

ZIMSEC O Level Geography Notes: Population: Causes of Rapid Population change and the effects of rapid population change

  • Improvement in the basic health care which has a lowered the death rate
  • Cultural factors for example, the desire to have a male child factor in the patriarchal societies
  • Need for […]
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Common Killer diseases in the Tropics: Bilharzia

By |2025-02-12T09:30:10+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Bilharzia is a waterborne disease. Image credit lshtm.ac.uk

ZIMSEC O Level Geography Notes:Common Killer diseases in the Tropics: Bilharzia

  • Is also known as schistosomiasis.
  • It is another serious infection and wide spread in Africa and other tropical and sub-tropical regions.
  • The disease is caused by a flat worm that lives in various […]
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