Orographic/Relief Rainfall
Aberfoyle Tea Estate in the Honde Valley Eastern Highlands is one of the places that receive a lot of Relief rainfall. Image Credit Buckinghambirding. ZIMSEC O Level Geography Notes: […]
February 2025
The theory of continental drift
Evidence for the continental drift. Image by Wiki Commons. ZIMSEC O Level Geography Notes: The theory of continental drift
- The theory of or idea that present day continents were once one single continent.
- Continental drifts refers to the movement of continents.
- The theory says that […]
Earthquakes and their causes
Destruction wreaked by an earthquake. Image credit Telegraph.co.uk ZIMSEC O Level Geography Notes: Earthquakes and their causes
- An earthquake is a shaking, vibration, trembling or movement in the earth’s crust.
- They are caused by one tectonic plate sliding over or past another plate along […]
Deflation Hollows
Deflation Hollow. Image via Imgkid ZIMSEC O Level Geography Notes: Deflation Hollows
- Are also known as closed hollows or blowouts.
- These are enclosed depressions caused by wind erosion.
- In deserts the wind erodes loose material from flat areas which have, uncemented sediments such as those occurring in […]
Factors affecting erosion, transportation and deposition
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 ![Laminar and Turbulent [...]
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Surface Water flow and the origin of rivers
Natural Springs contribute their water to rivers and often form the source of rivers. Image credit paintballfun.com ZIMSEC O Level Geography Notes: Surface Water Flow and the Origin of rivers
Surface water flow and […]
Pipelines
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 […]
Possible solutions to Urbanisation problems
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 […]
Causes of Rapid Population change and the effects of rapid population change
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 […]
Common Killer diseases in the Tropics: Bilharzia
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 […]