Weather and Climate Archives - Free ZIMSEC & Cambridge Revision Notes

Cyclones

By garikaib|2022-09-15T12:44:51+02:00January 24th, 2023|O Level Geography, Weather and Climate|

The formation of a cyclone. Image via Imagarcade. ZIMSEC O Level Geography Notes: Cyclones

Features of a cyclone.

These are systems of intense low pressure.
There are sometimes known as hurricanes (the U.S and the American continents) and typhoons( in Asian countries).
On a map the […]

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Drought

By garikaib|2022-09-15T12:44:37+02:00January 24th, 2023|Notes, O Level Geography, Ordinary Level Notes, Weather and Climate|

Drought stressed maize. Image by Missouri.edu ZIMSEC O Level Geography Notes: Weather Hazards: Drought

In general terms drought is caused by a general shortage of precipitation over an extended period of time usually the rain season resulting in water shortages for both human and natural […]

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Rainfall

By garikaib|2022-09-15T12:44:50+02:00January 24th, 2023|O Level Geography, Weather and Climate|

Rainfall. Image via the Herald. ZIMSEC O Level Geography Notes: Rainfall.

Rainfall is just one form of precipitation.
Precipitation occurs when warm moist air rises or is forced to rise.
Water vapor in the air parcel cools and condenses to form clouds.
This is because temperature falls with increase […]

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Frontal Systems

By garikaib|2022-09-15T12:44:59+02:00January 24th, 2023|O Level Geography, Weather and Climate|

Weather on a Front. Image by DiyMid. ZIMSEC O Level Geography Notes: Fronts

Fronts

-A front is a boundary between two air masses. Fronts are classified and named according to which air mass is replacing the other.

Warm Front A [...]
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Orographic/Relief Rainfall

By garikaib|2022-09-15T12:44:49+02:00January 24th, 2023|O Level Geography, Weather and Climate|

Aberfoyle Tea Estate in the Eastern Highlands is one of the places that receive a lot of Relief rainfall. Image Credit Buckinghambirding. Aberfoyle Tea Estate in the Honde Valley Eastern Highlands is one of the places that receive a lot of Relief rainfall. Image Credit Buckinghambirding. ZIMSEC O Level Geography Notes: […]

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Pressure systems

By garikaib|2022-09-15T12:44:54+02:00January 24th, 2023|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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Convectional rainfall

By garikaib|2022-09-15T12:44:49+02:00January 24th, 2023|O Level Geography, Weather and Climate|

Convectional Rainfall commonly occurs in rainforests. Image by Wallpaperlepi ZIMSEC O Level Geography Notes: Convectional Rainfall

This is the main type of rainfall in the humid tropics such as the Amazon and Congo rain forests.
Occurs when the ground surface is locally […]

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Introduction to weather and climate

By garikaib|2022-09-15T12:44:59+02:00January 24th, 2023|O Level Geography, Weather and Climate|

Rainy Weather. Image by Sodahead. ZIMSEC O Level Geography Notes: Introduction to Weather and Climate

Weather-the state of the atmosphere at a particular place and time as regards heat, cloudiness, dryness, sunshine, wind, rain, etc. The weather is all around us, all the time. It is an […]

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Convergence/Cyclonic/Frontal/Depression rainfall

By garikaib|2022-09-15T12:44:48+02:00January 24th, 2023|O Level Geography, Weather and Climate|

Zimbabwe receives most of its rainfall from the ITCZ. Image by Aljezeera. ZIMSEC O Level Geography Notes: Frontal/ Cyclonic/Convergence Rainfall

This is also know as frontal or cyclonic or depression rainfall.
Cyclonic rainfall occurs in the temperate latitudes and is […]

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The Weather Station

By garikaib|2022-09-15T12:44:58+02:00January 24th, 2023|O Level Geography, Weather and Climate|

A typical weather station. Image by Stanbachonline. ZIMSEC O Level Geography Notes: Weather Station

-A weather station is a facility, either on land or sea, with instruments and equipment for measuring atmospheric conditions to provide information for weather forecasts and to study the weather […]

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January 2023