O Level Geography Archives - Free ZIMSEC & Cambridge Revision Notes

Advantages and Disadvantages of wood as a source of energy

By Rachel Majaya|2017-03-29T09:00:03+02:00March 29th, 2017|Notes, O Level Geography, Ordinary Level Notes|

Burning wood. Image credit villagenews.com

ZIMSEC O Level Geography Notes: Natural Resources: Energy: Advantages and Disadvantages of wood/crop residue/cow dung as a source of energy

Advantages

Renewable energy sources.
Cheap or free in rural areas.
Easily accessible where forests or woodlands/crops/animals exist.
Tsotso stoves conserve live trees.
Technology very cheap and readily […]
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Advantages and Disadvantages of Hydroelectricity

By Rachel Majaya|2017-03-29T08:53:45+02:00March 29th, 2017|Notes, O Level Geography, Ordinary Level Notes|

A micro-hydroelectric power station. Image credit abc.net.au

ZIMSEC O Level Geography Notes: Natural Resources: Energy: Advantages and Disadvantages of Hydroelectricity

Advantages

Renewable energy source.
Cheap to maintain as water-transports itself to plants.
Very clean energy source.
Easy to use.
Very versatile, that is many uses.
Large lakes are multi-purpose can also be […]
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Advantages and Disadvantages of Solar energy

By Rachel Majaya|2017-03-29T08:45:18+02:00March 29th, 2017|Notes, O Level Geography, Ordinary Level Notes|

Solar Power Plant. Image credit sma-america.com

ZIMSEC O Level Geography Notes: Natural Resources: Energy:Advantages and Disadvantages of Solar energy

Advantages

Renewable energy source.
Plentiful and inexhaustible.
Very clean.
Relatively cheap.
Can power vehicles.
Suitable even in remote areas.
High energy output.
No pollutions associated with it.

Disadvantages

Expensive for poor rural communities.
Affected […]
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Advantages and Disadvantages of Nuclear power as a source of energy

By Rachel Majaya|2017-03-29T08:40:01+02:00March 29th, 2017|Notes, O Level Geography, Ordinary Level Notes|

Nuclear Power Plant. Image credit drug-alcoholtesting.co.uk

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

Advantages

Very long lifespan as half-life of most radioactive substances is about 4 000 years.
Has very high energy output.
Very efficient energy source.
Relatively clean if […]
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Advantages and Disadvantages of Natural gas as a source of energy

By Rachel Majaya|2017-03-29T08:35:21+02:00March 29th, 2017|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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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|2017-07-29T10:50:02+02:00March 29th, 2017|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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Advantages and Disadvantages of coal as a source of energy

By Rachel Majaya|2017-03-29T08:36:14+02:00March 29th, 2017|Notes, O Level Geography, Ordinary Level Notes|

Burning coal

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

Advantages

Relatively high energy amount.
Fairly plentiful with global estimate use of 4 000 years.
Employment creation in mining, processing, burning and distribution.
Has many other industrial uses.
Relatively cheap energy source.

Disadvantages

Non-renewable […]
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Africa’s Energy Resources

By Rachel Majaya|2017-03-27T09:36:52+02:00March 27th, 2017|Notes, O Level Geography, Ordinary Level Notes|

Old Inga Dam DRC. Image credit internationalrivers.org

ZIMSEC O Level Geography Notes: Natural Resources: Energy:Energy resources of Africa

Electricity is generated from two major processes, thermal and hydro.
The thermal component includes petroleum on top of coal for a number of countries such as Egypt, Algeria, Nigeria and Libya.
For other […]
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Possible measures to solve the energy crisis in Zimbabwe

By Rachel Majaya|2017-03-27T09:30:16+02:00March 27th, 2017|Notes, O Level Geography, Ordinary Level Notes|

Cahora Bassa Dama Mozambique.Image credit zambezitraveller.com

ZIMSEC O Level Geography Notes: Natural Resources: Energy:The energy crisis in Zimbabwe:Measures

Measures have been put in place to try to resolve the energy crisis in Zimbabwe. These include:

Imports of electricity from countries overproducing it for example from South Africa through the Insukamini interconnector near […]
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The energy crisis in Zimbabwe

By Rachel Majaya|2017-03-27T09:13:08+02:00March 27th, 2017|Notes, O Level Geography, Ordinary Level Notes|

Polling Stations in the Dark. Image credit mg.co.za

ZIMSEC O Level Geography Notes: Natural Resources: Energy:The energy crisis in Zimbabwe

The energy crisis in Zimbabwe is demonstrated through the following:

Frequent shortages of petroleum and its products resulting in long queues for the scarce commodity at service stations.
Fluctuating prices in the […]
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O Level Geography

March 2017

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2020 Grade 7 Results out