February 2025

Raw Materials and Location of industries

By |2025-02-12T09:05:53+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

ZIMSEC O Level Geography Notes:Types of Industrial Location: Raw Materials and Location of industries 

  • From this calculation, a number of situations may arise:
  • \text{Raw Materials Index (RMI)} =\dfrac{\text{weight of raw materials}}{\text{weight of finished product}}
  • The formula used is
  • Industrialists calculate what is called the raw material index (RM index) to determine how raw materials will affect the location […]
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Roads in Zimbabwe

By |2025-02-12T09:11:20+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Wide tarred road with a cycle track.

ZIMSEC O Level Geography Notes: Transport: Road transport network in Zimbabwe

  • Roads in Zimbabwe have been divided into groups, namely:<
    1. Wide-tarred roads which are two-way highways with a minimum width of 6 metres, and
    2. Other roads include here are narrow-tarred roads, strip roads and […]
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Factors influencing world trade

By |2025-02-12T09:07:09+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Trucks at the border between Zimbabwe and South Africa. Image credit BBC

ZIMSEC O Level Geography Notes: Trade:Factors influencing world trade

  • There are several factors that influence trade.
  • Some of these factors are:
  • National income

If a country’s income level (national income) increases by a higher percentage than those of other countries, […]

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Copper products, benefits and problems

By |2025-02-12T09:39:34+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Copper products in a hardware store

ZIMSEC O Level Geography Notes: Natural Resources: Copper mining in Zambia:Copper products

The following is a list of properties of copper:

  • Copper is ductile. Meaning it can be made into wire.
  • It can be polished, thus it is used for making ornaments for example, copper plates, […]
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Sustainable Management of forest resources in rural areas

By |2025-02-12T09:24:30+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Some of the staff from various ministries and organisations in Zimbabwe involved in the sustainable use of resources

ZIMSEC O Level Geography Notes:Natural Resources: Sustainable Management of forest resources in rural areas

  • Sustainable economic development involves the careful management of resources, conservation and the monitoring of the effects of resource exploitation […]
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Natural Resources: Sustainable water consumption

By |2025-02-12T09:13:43+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Water should be used in a sustainable manner.

ZIMSEC O Level Geography Notes: Natural Resources: Water: Sustainable water consumption

  • Sustainable water use means that water must be consumed at the same rate or slower than it is being replenished by the hydrological cycle.
  • To ensure equal access to water, increase protection […]
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Ocean and Sea fishing

By |2025-02-12T09:11:23+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

 

Horse Mackerel. Image credit sites.google.com

ZIMSEC O Level Geography Notes: Natural Resources: Fishing:Fishing:Sea fishing

  • The coastal areas of southern-central Africa stretching from Tanzania, through Mozambique, South Africa, Namibia, Angola and DRC is home to several marine species including fish.
  • Fish resources are concentrated within the narrow continental shelf, a few kilometres […]
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Energy:Thermal power

By |2025-02-12T09:28:46+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Hwange Thermal Power Station. Image credit businessdaily.co.zw

ZIMSEC O Level Geography Notes: Natural Resources: Energy:Thermal power

  • In thermal power production, fuel is used to heat water in huge boilers, converting this water into steam.
  • The steam at high pressure and through pipes, is directed to turbines.
  • The pressure turns the turbines […]
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Advantages and Disadvantages of Natural gas as a source of energy

By |2025-02-12T08:59:51+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Natural gas flame

ZIMSEC O Level Geography Notes: Natural Resources: Energy: Advantages and Disadvantages of Natural gas as a source of energy

 Advantages

  • Has a high energy output.
  • Cleaner and efficient.
  • Easy to mine and transport
  • Cheap
  • Can power vehicles.
  • Has other industrial uses.

Disadvantages

  • Environmentally unfriendly through pollution especially of air.
  • Very […]
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Pressure systems

By |2025-02-12T09:10:04+02:00February 12th, 2025|O Level Geography, Weather and Climate|

The world's pressure belts The world’s pressure belts and winds ZIMSEC O Level Geography Notes: Pressure

Pressure

  • Air has weight and therefore exerts pressure, called atmospheric pressure onto the earth’s surface.
  • The pressure is not the same for all regions nor is it the same for any one region all the time that […]
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