February 2025

Experiment: Finding the resistance of a resistor using a voltmeter

By |2025-02-12T09:26:37+02:00February 12th, 2025|Notes, O Level Science Notes, Ordinary Level Notes|

ZIMSEC O Level Combined Science Notes:  Experiment: Finding the resistance of a resistor using a voltmeter

Aim:  To find the resistance of a resistor in a circuit using voltmeter

Materials: cells, ammeter, resistor,switch, leads with crocodile clips

Finding Resistance

Method

  1. Set up the circuit as shown above
  2. Close the switch
  3. Read and record values of the […]
Read More
Comments Off on Experiment: Finding the resistance of a resistor using a voltmeter

Introduction:Generators and Motors

By |2025-02-12T09:43:00+02:00February 12th, 2025|Notes, O Level Science Notes, Ordinary Level Notes|

Hwange Power Plant. Image credit chronicle.co.zw Hwange Power Plant. Image credit chronicle.co.zw ZIMSEC O Level Combined Science Notes: Introduction:Motors and generators

  • Due to their nature batteries and cells produce a limited amount of electrical power
  • A lot of the electricity used in homes and industries comes from generators
  • Generators convert kinetic […]
Read More
Comments Off on Introduction:Generators and Motors

Reinforced concrete and stone properties and structures

By |2025-02-12T09:22:52+02:00February 12th, 2025|Notes, O Level Science Notes, Ordinary Level Notes|

Reinforced concrete. Image credit surfcivil.blogspot.com Reinforced concrete. Image credit surfcivil.blogspot.com ZIMSEC O Level Combined Science Notes: Metal and metal alloy properties and their construction uses

  • Often building materials are combined when building a structure
  • The most common such mixture is reinforced concrete
  • It is a mixture of steel and concrete
  • Steel is […]
Read More
Comments Off on Reinforced concrete and stone properties and structures

Experiment:Finding the mechanical advantage of an inclined plane

By |2025-02-12T09:40:29+02:00February 12th, 2025|Notes, O Level Science Notes, Ordinary Level Notes|

ZIMSEC O Level Combined Science Notes: Experiment:Finding the mechanical advantage of an inclined plane

Aim: Finding the Mechanical Advantage of an inclined plane

Materials: 1m long plank, sandpaper, bricks. cotton reel, nails, thick steel wire, wood block (smoothed on the underside) weights/tin and sand, pliers, string, spring balance/scales

Finding the mechanical of an inclined plane Finding the […]

Read More
Comments Off on Experiment:Finding the mechanical advantage of an inclined plane

Experiment: To show how a hydraulic Machine increases force

By |2025-02-12T09:11:40+02:00February 12th, 2025|Notes, O Level Science Notes, Ordinary Level Notes|

Syringes showing how a hydraulic machine works Syringes showing how a hydraulic machine works ZIMSEC O Level Combined Science Notes: Experiment: To show how a hydraulic Machine increases force

Aim: To show how a hydraulic machine increases force

Materials:  small syringe, syringe with larger diameter, plastic tube, water, ruler

Method

  1. Half fill the large syringe […]
Read More
Comments Off on Experiment: To show how a hydraulic Machine increases force

Diseases:HIV/AIDS

By |2025-02-12T09:30:54+02:00February 12th, 2025|Notes, O Level Science Notes, Ordinary Level Notes|

Zimbabwe nurse and health worker. Image credit icrc.org Zimbabwe nurse and health worker. Image credit icrc.org ZIMSEC O Level Combined Science Notes: Disease:Immunity and Immunisation

HIV and Its effects

  • HIV stands for Human Immunodeficiency Virus
  • It lives in the body fluids including blood, saliva, semen, tears etc
  • It enters the body in […]
Read More
Comments Off on Diseases:HIV/AIDS

Causes of infertility

By |2025-02-12T08:57:00+02:00February 12th, 2025|Notes, O Level Science Notes, Ordinary Level Notes|

Sterility can cause strain in a relationship. Image credit colossiansfamilynetwork.org Sterility can cause strain in a relationship. Image credit colossiansfamilynetwork.org ZIMSEC O Level Combined Science Notes: Causes of infertility

  • Sterility is the inability to reproduce
  • There are a number of causes for sterility
  • Low sperm count (makes it […]
Read More
Comments Off on Causes of infertility

How managers can use Maslow’s theory of motivation

By |2025-02-12T09:17:09+02:00February 12th, 2025|Notes, O Level Business Studies Notes, Ordinary Level Notes|

A shop floor worker. Image credit footprint2africa.com A shop floor worker. Image credit footprint2africa.com ZIMSEC O Level Business Studies Notes: How managers can use Maslow’s theory of motivation

  • Maslow’s motivation theory can be used to motivate workers in a number of ways
  • Managers should first identify the unfulfilled needs of […]
Read More
Comments Off on How managers can use Maslow’s theory of motivation

Non Financial Methods of Motivation

By |2025-02-12T09:36:09+02:00February 12th, 2025|Notes, O Level Business Studies Notes, Ordinary Level Notes|

Non-financial motivators. Image credit icsingenierie.com Non-financial motivators. Image credit icsingenierie.com ZIMSEC O Level Business Studies Notes: Non Financial Methods of Motivation

  • These can be contrasted with financial methods of motivation
  • Non financial motivation methods are those that do not involve the flow of monetary benefits to the employee/worker
  • These include:

    • […]

Read More
Comments Off on Non Financial Methods of Motivation
Toggle Sliding Bar Area
Go to Top