The rain-shadow effect
Sem-arid conditions in Save Valley are due to the Rain-shadow effect. Image by Youth Delegates ZIMSEC O Level Geography Notes: Rain Shadow Effect
We have already looked at the formation of relief rainfall elsewhere. The […]
February 2025
Divergence/Constructive zone/plates
Divergent plates. Image by Cornel. ZIMSEC O Level Geography Notes: Plate Tectonics: Convergence Plates
- In a divergence zone plates move away from one another thus the name “divergence.”
- Magma up-wells from the mantle to fill the gap left by the diverging plates.
- The magma provides new material to form […]
Weathering
A weathered boulder. Image credit earthlearningidea. ZIMSEC O Level Geography Notes: Weathering
- Earth movements (plate tectonics) create and lead to the development of the earth’s major landforms for example block mountains, volcanic cones, lava plateaus and rift valleys.
- As soon as they are formed denudation processes […]
Yardangs, Zeugens and Rock Pedestals
Zeugens. Image credit Revisionworld.com ZIMSEC O Level Geography Notes: Hot Deserts: Yardangs
Zeugens
- Pictured in the diagram above.
- Zeugens are the ridges in “ridge and furrow” landscapes found in deserts.
- These ridge and furrow landscapes sculpted found in hot deserts are a result of wind erosion.
- Wind abrasion turns a desert surface […]
The Double Entry Concept
Introduction to double entry. Image credit snwmo636sriverct.biz ZIMSEC O Level Principles of Accounts Notes
- You need to pay close attention because this is where the accounting part in accounting begins.
- This is the basic rule in accounting which states that any accounting transaction should be […]
Quotation, Price list and Catalouges
An example of a catalogue. Image credit graphicriver.net ZIMSEC O Level Commerce Notes: Quotation, price list and catalogue
Quotation
- Is sent in reply to a letter of inquiry.
- It is sent by a seller to a buyer
- It is also send to a potential buyer […]
Advantages and disadvantages of Hire Purchase to the buyer
A furniture store. Image credit householddesigns.rock ZIMSEC O Level Commerce Notes: Hire Purchase
Advantages to buyer
- There is no need for the buyer to raise the full purchase amount at once.
- The buyer can use the goods while paying for them.
- The profits generated from using the good(s) […]
River capture
River capture. ZIMSEC O Level Geography Notes: River capture
- This is a process where one River captures the headwaters on a nearby stream.
- This can occur due to several reasons viz:
- Tectonic earth movements, where the slope of the land changes, and the stream is tipped out of its former course.
- Natural damming, […]
Supermarkets
PicknPay supermarket. Picture by Source
ZIMSEC O Level Commerce Notes: Retail Trade: Supermarkets
Supermarket
A large shop with a minimum floor area of 186 square meters, sells household goods and grocery on a cash and carry basis. They are mainly situated in busy areas like suburbs and […]
Primary producer warehouses
GMB Silo. Image by TheZimbabwean.co ZIMSEC O Level Commerce Notes: Warehousing: Primary producer warehouses
Primary producer warehouses
- There are two main types of primary producers warehouses in Zimbabwe:
- Grain silos used to store grain by the Grain Marketing Board.
- Tobacco Auction Floors.
Grain Silo
- Run and managed by the Grain Marketing […]