February 2025

Divergence/Constructive zone/plates

By |2025-02-12T09:18:09+02:00February 12th, 2025|Landform Studies, Notes, O Level Geography, Ordinary Level Notes|

Divergent plates. Image by Cornel. Divergent plates. Image by Cornel. ZIMSEC O Level Geography Notes: Plate Tectonics: Convergence Plates

  • In a divergence zone plates move away from one another thus the name “divergence.”
  • Magma up-wells from the mantle to fill the gap left by the diverging plates.
  • The magma provides new material to form […]
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The construction of dams for multiple purposes

By |2025-02-12T09:09:53+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes, River Processes|

Lake Kariba. Image credit newsday.co.zw Lake Kariba. Image credit newsday.co.zw ZIMSEC O Level Geography Notes: River Processes: The construction of dams for Multiple purposes

  • a barrier constructed to hold back water and raise its level, forming a reservoir.
  • Daming involves the building across a river to hold the water back.
  • Strictly speaking the […]
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Inventions made in the Industrial revolution

By |2025-02-12T09:38:42+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Watt's steam engine. Image credit MediaWiki Watt’s steam engine. Image credit MediaWiki ZIMSEC O Level History Notes: Missionaries:Inventions made in the Industrial revolution

  • The following were some of the inventions that came out of Britain’s Industrial Revolution:
  • The seed drill
  • The steam engine
  • Weaving machines
  • Spinning machines such as Spinning Jenny
  • Railways
  • Telegraphs
  • Steam boats that made travel […]
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Introduction to population growth, change and structure

By |2025-02-12T09:09:45+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

ZIMSEC O Level Geography Notes: Introduction to population growth, change and structure

  • There is a strong inter-relationship between birth rate, death rate, population growth, change and structure.
  • Birth rate is the number of live births per 1 000 of the population in one year.
  • \text{Crude Birth Rate}=\dfrac{Number\quad of \quad Live \quad Births \quad in \quad Year}{Total\quad Population \quad in […]
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Farm Inputs: Land Ownership

By |2025-02-12T08:56:06+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

A communal farmer. Image credit mg.co.za

ZIMSEC O Level Geography Notes:Agriculture:Farm Inputs: Land Ownership

Land ownership or tenure

  • This mainly results from socio-economic and political as well as historical factors that prevail in an area.
  • The tenant or leasehold system of land tenure in one where a landlord leases or rents land to […]
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Farm Inputs: Land size, Soil and Slope

By |2025-02-12T09:23:48+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Crops require the right soil. Image credit voanewsamerica.com

ZIMSEC O Level Geography Notes:Agriculture:Farm Inputs: Land size, Soil and Slope

Land size

  • Size of the land is significant in farming because where land is short and farming land is small, traditional farmers have to practice intensive subsistence farming.
  • Subsistence farming is the growing of […]
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