Urban Heat Islands
Urban Heat Island. The diagram shows typical temperature differences between an Urban area and the adjacent rural area. Image via Pixshark.
ZIMSEC O Level Geography Notes: Urban Heat Islands.
- Due […]
February 2025
Vulcanicity
Violent volcanic eruption. Image via Dailymail. ZIMSEC O Level Geography Notes: Vulcanicity
- Vulcanicity refers to all the various way by which molten rock and gasses are forced into the earths and onto its surface.
- It includes volcanic eruptions which lead to the formation of volcanoes, lava plateaus and geysers.
- It […]
Limestone pavements
Clints and grikes. Image credit nen.gov.uk. ZIMSEC O Level Geography Notes: Limestone pavements
- Limestone pavements are flat areas of exposed limestone rocks.
- They are part of the dissolved bedding plate which may have been exposed because the surface soil may have been removed by glacial activity […]
Human activities in deserts
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 […]
Ox-bow lakes
Ox-bow lake. Image credit airphotona.com ZIMSEC O Level Geography Notes: Ox-bow lakes
- An oxbow lake is a U-shaped body of water that forms when a wide meander from the main stem of a river is cut off, creating a free-standing body of water.
- This landform is […]
Transport: Bicycles, carts and Rickshaws
A rickshaw. Image credit MediaWiki ZIMSEC O Level Geography Notes: Transport: Draught Power
Advantages
- cheap
- clean
versatile - simple and available technology which makes them easy to manufacture and repair
- Usually they do not require route permits
Disadvantages
- They only carry a limited amount of goods/people
- Can cause traffic congestion or make it worse.
- They can […]
The concentric model/Burgess’s model (1924)
The Concentric Model. Image credit edublogs.org ZIMSEC O Level Geography Notes: Settlements: The concentric model/Burgess’s model (1924)
- This is known alternatively as the concentric model, the ring model for urban land use or Burgess’ model.
- It was formulated by Burgess and Park in 1924 after their […]
Population distribution in Zimbabwe
Farming compounds have a higher population density. Image credit sfbayview.com ZIMSEC O Level Geography Notes: Population:Population distribution in Zimbabwe
- The population of Zimbabwe as of 18 August 2012 was 12 973 808
- 6 234 931 males and 6 738 877 females
- This population lived 3 076 […]
The refugee problem
South Sudan Nuba refugees. Image credit Huffingtonpost.com
ZIMSEC O Level Geography Notes:Refugees: The refugee problem
- Between 1963-1979 nationalist movements waged a war of liberation in Zimbabwe, which caused a lot of hardships for the population
- The intensification of the political oppression and persecution in the country forced many people to flee the […]
Farming types in Africa: Subsistence farming
Subsistence Farming. Image credit wordpress.com
ZIMSEC O Level Geography Notes:Agriculture:Farming types in Africa: Subsistence farming
- Subsistence farmers grow traditional crops such as maize, rice, sorghum, groundnuts, rapoko, millet and cassava.
- They keep livestock in the form of cattle, goats, mules, donkeys, pigs and some poultry.
- This is done on a small scale […]