January 2023

Inventions made in the Industrial revolution

By |2022-09-15T12:41:06+02:00January 24th, 2023|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 |2022-09-15T12:37:10+02:00January 24th, 2023|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 |2022-09-15T12:36:45+02:00January 24th, 2023|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 |2022-09-15T12:36:45+02:00January 24th, 2023|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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Commercial ranching

By |2022-09-15T12:36:29+02:00January 24th, 2023|Notes, O Level Geography, Ordinary Level Notes|

Brahman cattle. Image credit agcanada.com

ZIMSEC O Level Geography Notes:Agriculture:Farming types in Africa: Commercial ranching

  • This is the large scale rearing of livestock mainly to produce meat for sale.
  • In Zimbabwe however, the ranching has of late been diversified with the farmers not just keeping cattle and sheep but also wildlife […]
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Power supply and Location of industries

By |2022-09-15T12:36:20+02:00January 24th, 2023|Notes, O Level Geography, Ordinary Level Notes|

Power is important in industry

ZIMSEC O Level Geography Notes:Types of Industrial Location:Power supply and Location of industries

  • Almost all modern industries use electricity in their industrial process.
  • This power can come from individual small stations of thermal, nuclear or hydro-origin in which case the industries must locate close to the […]
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Railways, ports and inland waterways

By |2022-09-15T12:35:58+02:00January 24th, 2023|Notes, O Level Geography, Ordinary Level Notes|

A Ferry on Lake Malawi. Image credit seabreezes.co.im

ZIMSEC O Level Geography Notes: Transport: Railways, ports and inland waterways

  • Africa’s transport network is the least development in the world for various reason.
  • The continent has some of the world’s poorest nations with very low Gross Domestic Products (GDPs), Gross National Products […]
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The benefits and problems facing SADC

By |2022-09-15T12:35:39+02:00January 24th, 2023|Notes, O Level Geography, Ordinary Level Notes|

Some of the SADC staff.

ZIMSEC O Level Geography Notes: Trade:The benefits and problems facing SADC

Benefits

  • The countries collectively from a large regional market.
  • Jointly, the countries have a diverse resources base. If exploited fully these would stimulate rapid economic growth within the region.
  • Bilateral trade between member states.
  • There are […]
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Effects of mining on the environment

By |2022-09-15T12:35:23+02:00January 24th, 2023|Notes, O Level Geography, Ordinary Level Notes|

Gullying as a result of panning. Image credit Reuters

ZIMSEC O Level Geography Notes: Natural Resources Impact of mining on the environment

  • Deforestation and erosion as large areas are cleared when surface methods of mining are used.
  • Frequency of open quarries, trenches and pits may cause land degradation.
  • Infrastructure development which include the […]
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