population studies Archives - Free ZIMSEC & Cambridge Revision Notes

Causes of Rapid Population change and the effects of rapid population change

By Rachel Majaya|2025-02-12T09:06:15+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Hopely Farm settlement

ZIMSEC O Level Geography Notes: Population: Causes of Rapid Population change and the effects of rapid population change

Improvement in the basic health care which has a lowered the death rate
Cultural factors for example, the desire to have a male child factor in the patriarchal societies
Need for […]

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Common Killer Diseases in the Tropics

By garikaib|2025-02-12T09:29:15+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

A map showing the tropics. Image credit MediaWiki

ZIMSEC O Level Geography Notes:Population Studies:Common Killer Diseases in the Tropics

Zimbabwe lies in the Tropics
This is a geographic region found between 0° and 23º North and South of the equator
Zimbabwe is of course found on the South side of the equator

[…]

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Population Change

By Rachel Majaya|2025-02-12T09:06:53+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Health care improvements affect population change. Image credit ibtimes.co.uk

ZIMSEC O Level Geography Notes: Population: Population Change

The difference between the size of the population to the end and the beginning of a period.
This change is developmental, that is, it has stages through which a population passes
This theory can be […]

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Common Killer diseases in the Tropics: Bilharzia

By Rachel Majaya|2025-02-12T09:30:10+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Bilharzia is a waterborne disease. Image credit lshtm.ac.uk

ZIMSEC O Level Geography Notes:Common Killer diseases in the Tropics: Bilharzia

Is also known as schistosomiasis.
It is another serious infection and wide spread in Africa and other tropical and sub-tropical regions.
The disease is caused by a flat worm that lives in various […]

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Population structure
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Population structure

Notes, O Level Geography, Ordinary Level Notes

Population structure

By Rachel Majaya|2025-02-12T09:07:55+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

ZIMSEC O Level Geography Notes: Population: Population structure

The population structure of a country describes the population’s age, sex and the period males and females are expected to live
Population structure is the composition of a given population, which is broken down into categories such as age and gender.
This information can be shown on a population […]

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Common Killer Diseases in the Tropics: Malaria

By Rachel Majaya|2025-02-12T09:30:27+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Anopheles Mosquito. Image credit voanews.com

ZIMSEC O Level Geography Notes:Common Killer Diseases in the Tropics: Malaria

Malaria is one of the most widespread diseases in Tropical Africa.
It is caused by a parasite called plasmodium,
which is transmitted by the female anopheles mosquito.
When a female anopheles mosquito bites a patient, it […]

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Introduction to population growth, change and structure
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Introduction to population growth, change and structure

Notes, O Level Geography, Ordinary Level Notes

Introduction to population growth, change and structure

By Rachel Majaya|2025-02-12T09:09:45+02:00February 12th, 2025|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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Migration: Introduction

By Rachel Majaya|2025-02-12T09:19:16+02:00February 12th, 2025|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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Causes of Migrations

By Rachel Majaya|2025-02-12T09:19:53+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Causes of Migration. Image credit rnw.nl

ZIMSEC O Level Geography Notes: Migration: Causes of Migrations

Generally factors that affect migration are divide into two:
push factors and
pull factors
Push factors are those that are responsible for driving people from an area
Pull factors are those that attract people to an area.

[…]

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Internal Migrations

By Rachel Majaya|2025-02-12T09:20:29+02:00February 12th, 2025|Notes, O Level History Notes, Ordinary Level Notes|

Commuters are part of internal migrations

ZIMSEC O Level Geography Notes: Migration: Internal Migrations

These are migrations within the same country for example from Masvingo to Harare
For example in Zimbabwe people move from one area to another for varying durations of time
The table below shows some common push and pull […]

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February 2025