O Level Geography Archives - Page 15 of 35 - Free ZIMSEC & Cambridge Revision Notes

Raw Materials and Location of industries
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Raw Materials and Location of industries

Notes, O Level Geography, Ordinary Level Notes

Raw Materials and Location of industries

By Rachel Majaya|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 Rachel Majaya|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 Rachel Majaya|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 Rachel Majaya|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 Rachel Majaya|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 Rachel Majaya|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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Aquaculture and its advantages and disadvantages

By Rachel Majaya|2025-02-12T09:09:21+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Fishing in an aquaculture pond. Image credit irinnews.org

ZIMSEC O Level Geography Notes: Natural Resources: Fishing:Advantages and disadvantages of aquaculture

the rearing of aquatic animals or the cultivation of aquatic plants for food
It is practiced in ponds, rivers, dams, lakes or even oceans
It is also known as aquafarming
The […]

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The siting and production of hydro-electric power: Rivers and Space

By Rachel Majaya|2025-02-12T09:28:25+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

The Zambezi River and the Victoria Falls. Image credit thesafarisource.com/

ZIMSEC O Level Geography Notes: Natural Resources: Energy:The siting and production of hydro-electric power

Large perennial rivers

These are also important and necessary for establishing HEP stations.
These ensure a constant supply of a large volume of water required.
When the rivers […]

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Advantages and Disadvantages of Oil/Petroleum as a source of energy
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Advantages and Disadvantages of Oil/Petroleum as a source of energy

Notes, O Level Geography, Ordinary Level Notes

Advantages and Disadvantages of Oil/Petroleum as a source of energy

By Rachel Majaya|2025-02-12T08:59:26+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

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

Advantages

Has high energy output, an efficient energy source.
Relatively cleaner compared with coal.
Easy to mine if land-based oilfields.
Easy to transport through pipelines.
Can be used to power vehicles
Relatively cheap.
Has a lot of other industrial uses.

Disadvantages

Environmentally […]

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Pressure systems

By garikaib|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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February 2025