climate Archives - Free ZIMSEC & Cambridge Revision Notes

Weather symbols/ Synoptic Charts

By garikaib|2025-02-12T09:28:18+02:00February 12th, 2025|O Level Geography, Weather and Climate|

weather-min

ZIMSEC O Level Geography Notes: Weather Symbols and Synoptic Charts

After weather measurements have been taken at weather stations
they are then plotted onto synoptic charts.
These charts make use of special symbols as a form of pre-agreed shorthand that is used to show the weather conditions at a given place at a […]

Comments Off

Weather Hazards

By garikaib|2025-02-12T08:59:03+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes, Weather and Climate|

Floods are just one of many natural weather hazards. Image by The Australian. ZIMSEC O Level Geography Notes: Weather Hazards

Weather hazards are conditions which are unfavorable to people and their activities that result from weather phenomena.
There are […]

Comments Off

Lightining

By garikaib|2025-02-12T09:01:14+02:00February 12th, 2025|Notes, Weather and Climate|

Lightining. Image by GreenSociety. ZIMSEC O Level Geography Notes: Weather Hazards: Lightining

Is typically caused by the physical characteristics of cumulonimbus weather conditions.
As rain drops fall the energy which they have causes a positive charge to develop at the top of a cloud and negative charges to develop […]

Comments Off

Floods

By garikaib|2025-02-12T09:03:34+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes, Weather and Climate|

Floods in OZ. Image by Time. ZIMSEC O Level Geography Notes: Weather Hazards: Floods.

Some parts of Zimbabwe especially low lying areas like Muzarabani. The Tokwe-Mukosi area near Masvingo experienced severe floods in the 2014/15 rain season leaving a lot of homes destroyed and people […]

Comments Off

Frost/Snow and Hail

By garikaib|2025-02-12T09:05:00+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes, Weather and Climate|

A house and vehicle covered in snow. Image by Novinite. ZIMSEC O Level Geography Notes: Frost/Snow and Hail.

Snow/Frost

Caused by a sudden fall or drop in temperature.
With snow ice crystals are formed in the atmosphere.
When these small ice crystals collide with […]

Comments Off

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 […]

Comments Off

Introduction to weather and climate

By garikaib|2025-02-12T08:59:57+02:00February 12th, 2025|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 […]

Comments Off

Temperature

By garikaib|2025-02-12T09:05:32+02:00February 12th, 2025|O Level Geography, Weather and Climate|

Six's thermometer Six’s thermometer ZIMSEC O Level Geography Notes: Temperature

The daily maximum and minimum temperatures are measured using Six’s thermometer (pictured above).
It was invented by James Six a British scientist hence the name Six’s thermometer.
It is also known as the Maximum and Minimum thermometer.
It is housed in a Stevenson’s screen.
Diurnal […]

Comments Off