June 2015

Factors affecting erosion, transportation and deposition

By |2022-09-15T12:44:05+02:00June 19th, 2015|Notes, O Level Geography, Ordinary Level Notes, River Processes|

Laminar Flow. Image credit gjhikes.com

Laminar Flow. Image credit gjhikes.com ZIMSEC O Level Geography Notes
  • The following factors affect the river’s energy and ability to erode, transport and deposit its load.
  • Type of flow, gradient of channel, volume/discharge, cross-sectional channel shape, channel roughness.

Type of flow


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River Erosion

By |2022-09-15T12:44:07+02:00June 18th, 2015|Notes, O Level Geography, Ordinary Level Notes, River Processes|

River erosion. Image credit Internationalarchives.org

River erosion. Image credit Internationalarchives.org ZIMSEC O Level Geography Notes: River Erosion
  • River erosion involves the wearing away of rock and soil found along the river bed and banks.
  • It also involves the breaking down of the rock particles being carried downstream by the river.
  • There are four […]

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Wind in deserts

By |2022-09-15T12:44:17+02:00June 12th, 2015|Hot Deserts, Notes, O Level Geography, Ordinary Level Notes|

A sandstorm in a desert. Image credit

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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Weathering

By |2022-09-15T12:44:24+02:00June 9th, 2015|Landform Studies, Notes, O Level Geography, Ordinary Level Notes|

A weathered boulder. Image credit earthlearningidea.

A weathered boulder. Image credit earthlearningidea. ZIMSEC O Level Geography Notes: Weathering
  • Earth movements (plate tectonics) create and lead to the development of the earth’s major landforms for example block mountains, volcanic cones, lava plateaus and rift valleys.
  • As soon as they are formed denudation processes […]

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