Raw Coke. Image credit MedialWiki ZIMSEC O Level Combined Science Notes: The manufacture of coke at Hwange
Demostrating static electricity using a comb. Image credit alinasadventuresinhomemaking.com ZIMSEC O Level Combined Science Notes: Electrostatics/Static Electricity
A simple cell in action ZIMSEC O Level Combined Science Notes: Experiment: Changing chemical energy into electrical energy
Aim: To change chemical energy into electrical energy using a simple cell
Materials: 10 cm magnesium ribbon, strip of copper foil, dilute sulphuric acid/ethanoic acid, ammeter/lamp/torch bulb,connecting leads with crocodile clips, […]
A simple motor. Image credit youtube.com ZIMSEC O Level Combined Science Notes: Electric motors
Joining parts of a plane. Image credit airportjournals.com ZIMSEC O Level Combined Science Notes:Methods of Joining materials
The Hong Kong Bridge. Image credit plus.maths.org ZIMSEC O Level Combined Science Notes: Suspension bridge
Bicycle pump in action. Image credit mpora.com ZIMSEC O Level Combined Science Notes: Pumps: Cycle pump
The internal structure of a cycle pump […]
People fetching contaminated water. Image credit mg.co.za ZIMSEC O Level Combined Science Notes: Diseases: Cholera
Black couple. Image credit classic105.com ZIMSEC O Level Combined Science Notes:Contraception:Ways to prevent pregnancy
How it works 
IUD
The savannah. Image credit wildnatureinstitute.org ZIMSEC O Level Combined Science Notes: Managing Ecosystems