O Level Geography Archives - Page 27 of 35 - Free ZIMSEC & Cambridge Revision Notes

Physical weathering

By garikaib|2022-09-15T12:44:22+02:00January 24th, 2023|Landform Studies, Notes, O Level Geography, Ordinary Level Notes|

Exfoliation weathering. Image credit asergeev.com ZIMSEC O Level Geography Notes: Physical Weathering

Physical weathering is the disintegration of a rock into smaller particles by mechanical processes and without any changes in the chemical composition of the rock.
It is more likely to occur in arid climates such […]

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Water Action in Deserts

By garikaib|2022-09-15T12:44:13+02:00January 24th, 2023|Hot Deserts, Notes, O Level Geography, Ordinary Level Notes|

Rain falling in a desert. Image credit Snipview.

In most deserts rain does not fall for several years.
When it does it comes in the form of unexpected and infrequent downpours.
Therefore despite the low rainfall totals (about 250mm per annum), water is […]

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Pot Holes

By garikaib|2022-09-15T12:44:02+02:00January 24th, 2023|Notes, O Level Geography, Ordinary Level Notes, River Processes|

Potholes. Image credit thunderbolts.info Potholes. Image credit coolgeography.co.uk ZIMSEC O Level Geography Notes: Landforms resulting form Potholes

These are circular holes bored into the solid bedrock of a river by pebbles and stones carried by the river.
The rough river bed, mostly common in the upper course section or rivers, encourages turbulent […]

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Streambank cultivation,gold panning and other human activities

By garikaib|2022-09-15T12:43:13+02:00January 24th, 2023|Notes, O Level Geography, Ordinary Level Notes, River Processes|

Bananas growing near a stream. Image credit MediaWiki. ZIMSEC O Level Geography Notes: River Processes: Stream bank cultivation

Stream bank cultivation refers to the practice of growing or cultivation of crops near a wetland, stream or river.
Sub-Saharan Africa has faced political, socio-economic problems […]

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Classification of settlements

By garikaib|2022-09-15T12:41:05+02:00January 24th, 2023|Notes, O Level Geography, Ordinary Level Notes|

A typical Zimbabwean rural homestead. Image credit lawhub.co.zw ZIMSEC O Level Geography Notes: Settlements: Classification of settlements

Settlements are generally classified as either rural or urban.
Rural settlements are those settlements where mostly primary activities occur.
The majority of settlers in rural areas carry out […]

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Advantages and Disadvantages of a Population Census

By garikaib|2022-09-15T12:40:45+02:00January 24th, 2023|Notes, O Level Geography, Ordinary Level Notes|

A census in progress. Image credit timeslive.co.za ZIMSEC O Level Geography Notes: Population:Advantages and Disadvantages of a Population Census

Like most things a population census has both its merits and demirits

Advantages

It is the most accurate count of a country’s population on which official planning […]

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Migration: Introduction

By Rachel Majaya|2022-09-15T12:37:03+02:00January 24th, 2023|Notes, O Level Geography, Ordinary Level Notes|

Forced Migration. Image credit UNHCR

ZIMSEC O Level Geography Notes: Migration: Introduction

Migration is the permanent or semi-permanent movement of people from one area to another, one country to another or one continent to another.
This involves the change of residence
There are several ways to classify migrations and these are:
1. In terms […]

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Human Farm Inputs: Farm machinery

By Rachel Majaya|2022-09-15T12:36:44+02:00January 24th, 2023|Notes, O Level Geography, Ordinary Level Notes|

Farm Tractors are widely used equipment.

ZIMSEC O Level Geography Notes:Agriculture:Human Farm Inputs: Farm machinery

Farm machinery

This is a very crucial human input in that it determines the productive capacity of a farming system.
The machinery used depends on the technological advancements of that community.
Machinery helps in making work light in […]

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Human Farm Inputs: Labour and Capital

By Rachel Majaya|2022-09-15T12:36:45+02:00January 24th, 2023|Notes, O Level Geography, Ordinary Level Notes|

Capital and Labour are important on farms. Image credit buzzsouthafrica.com

ZIMSEC O Level Geography Notes:Agriculture:Farm Inputs:Farm Inputs: Labour and Capital

These fall under Human Inputs

Labour

This refers to the number of people involved in a production system, their skills or technical know-how as well as their production objectives.
In traditional farming systems, […]

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