February 2025

Temperature

By |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 […]
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Convergence and collision zones/plates

By |2025-02-12T09:16:29+02:00February 12th, 2025|Landform Studies, Notes, O Level Geography, Ordinary Level Notes|

Convergence zone. Image by Coft.edu Convergence zone. Image by Coft.edu ZIMSEC O Level Geography Notes: Plate tectonics: Convergence Zone.

Convergence zone

  • Are also know as destructive plates (zones) or the zone of subduction.
  • This is when two plates move towards each other as shown on the diagram above.
  • An Ocean crust moves towards a […]
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The effects of earthquakes

By |2025-02-12T09:08:11+02:00February 12th, 2025|Landform Studies, Notes, O Level Geography, Ordinary Level Notes|

A tsunami in Miyako Japan 2011/Image credit Ibtimes. A tsunami in Miyako Japan 2011/Image credit Ibtimes. ZIMSEC O Level Geography Notes: The effects of Earthquakes.

Factors that may affect the impact of earthquakes.

  • Distance of concerned area from epicenter although you should take note of the factor below.
  • Coastal locations have a higher risk […]
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Sand Dunes and Ripples

By |2025-02-12T09:42:27+02:00February 12th, 2025|Hot Deserts, Notes, O Level Geography, Ordinary Level Notes|

Seif dunes. Image credit 7-themes.com Seif dunes. Image credit 7-themes.com ZIMSEC O Level Geography Notes: Sand Dunes

  • As soon as wind velocity drops wind deposition occurs.
  • The heaviest material is deposited first while the finer material and dust is carried further before being dropped.
  • As a result loess (which consists of fine particles) is sometimes […]
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Hire Purchase

By |2025-02-12T09:28:33+02:00February 12th, 2025|Notes, O Level Commerce Notes, Ordinary Level Notes|

TV Sales and Hire offers Hire Purchases. TV Sales and Hire offers Hire Purchases. ZIMSEC O Level Commerce Notes: Hire Purchase

  • Is a method of buying consumer durables such as Television sets on credit.

Characteristics

  • A written agreement between the buyer and seller is required.
  • A deposit is paid followed by installments (usually on a […]
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The hydrological / Water cycle

By |2025-02-12T09:00:59+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes, River Processes|

The hydrological cycle. Image credit BBC The hydrological cycle. Image credit BBC ZIMSEC O Level Geography Notes: The hydrological cycle.

  • Water does not leave or enter the planet earth.
  • It is instead continuously transferred between the atmosphere and the oceans.
  • The system of inputs, storages,flows and outputs is known as the water or hydrological […]
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Advantages and disadvantages of small scale retailers

By |2025-02-12T09:19:10+02:00February 12th, 2025|Notes, O Level Commerce Notes, Ordinary Level Notes|

Small scale traders at Mbare Musika. Image credit skyscapercity.com Small scale traders at Mbare Musika. Image credit skyscapercity.com ZIMSEC O Level Commerce Notes: Retail Trade: Advantages and Disadvantages of small scale retailers

Advantages of small scale retailers to Consumers

  •  open for long hours or even during holidays
  • sell a variety of goods
  • cater for individual tastes
  • sell […]
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