February 2025

Experiment: Demonstrating that an electric wire moves in a magnetic field

By |2025-02-12T09:01:21+02:00February 12th, 2025|Notes, O Level Science Notes, Ordinary Level Notes|

Demonstrating the motor effect. Image credit ideas-inspire.com Demonstrating the motor effect. Image credit ideas-inspire.com ZIMSEC O Level Combined Science Notes: Experiment: Demonstrating that an electric wire moves in a magnetic field

Aim:  To demostrate how a current carrying wire moves in a magnetic field

Materials: a length of flexible wire, small pieces of cardboard […]

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Methods of Joining materials

By |2025-02-12T09:16:37+02:00February 12th, 2025|Notes, O Level Science Notes, Ordinary Level Notes|

Joining parts of a plane. Image credit airportjournals.com Joining parts of a plane. Image credit airportjournals.com ZIMSEC O Level Combined Science Notes:Methods of Joining materials

  • Building structures such as bridges and pylons using solid material would be needlessly expensive
  • Most of this material would be in a neutral zone where it […]
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Arch bridges

By |2025-02-12T09:30:24+02:00February 12th, 2025|Notes, O Level Science Notes, Ordinary Level Notes|

An arch bridge An arch bridge ZIMSEC O Level Combined Science Notes: Arch bridges

  • In an arch bridge the arch acts to support a load by converting the downward force into sideways thrust
  • Arches can make structures last longer for example old buildings and structures in European countries have lasted as […]
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Pumps: Force pump

By |2025-02-12T09:04:42+02:00February 12th, 2025|Notes, O Level Science Notes, Ordinary Level Notes|

A solar force pump. Image credit sunfuel.co.in A solar force pump. Image credit sunfuel.co.in ZIMSEC O Level Combined Science Notes: Pumps: Force pump

  • A force pump:
  • Has a cylinder, piston, two valves and a spout (outlet)
  • It makes use of atmospheric pressure to force fluid/water into the pump through valves
  • The […]
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Substance abuse: Alcohol

By |2025-02-12T09:23:13+02:00February 12th, 2025|Notes, O Level Science Notes, Ordinary Level Notes|

Glasses of wine. Image credit pickywallpapers.com Glasses of wine. Image credit pickywallpapers.com ZIMSEC O Level Combined Science Notes: Substance Abuse: Alcohol

  • Alcohol is a legal and socially acceptable drug
  • It is however a poison
  • It is addictive and can lead to ill-health and even death
  • It is a depressant drug
  • It […]
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Injection (Depo Provera)

By |2025-02-12T09:40:01+02:00February 12th, 2025|Notes, O Level Science Notes, Ordinary Level Notes|

Image credit star.ng Image credit star.ng ZIMSEC O Level Combined Science Notes:Contraception:Injection (Depo Provera)

  • Also simply known as Depo
  • It is an injection containing medroxyprogesterone, a contraceptive injection for women that contains the hormone progestin

How it works Depo provera Depo provera injection

  • Prevents the […]
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Functional organisation structure

By |2025-02-12T09:45:46+02:00February 12th, 2025|Notes, O Level Business Studies Notes, Ordinary Level Notes|

Functional organisational structure Functional organisational structure

ZIMSEC O Level Business Studies Notes: Functional organisation structure

  • This is the traditional form of organisational structure
  • The organisation’s tasks and operations are divided into groups/departments based on organisational functions/function areas
  • Examples of such functions include marketing, finance, human resources, production/operations and IT (Information Technology)

    • […]

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The Grape Vine: Informal vs Formal Communication

By |2025-02-12T09:27:33+02:00February 12th, 2025|Notes, O Level Business Studies Notes, Ordinary Level Notes|

The grape vine gives it’s name to the informal communication process. Image credit cliparts.co

ZIMSEC O Level Business Studies Notes:The Grape Vine: Informal vs Formal Communication

  • Communication can also be classified as either informal or formal
  • Formal communication is official, arranged and approved of by the relevant authorities in the organisation

    • […]

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