Like charges repel and unlike attract ZIMSEC O Level Combined Science Notes: Experiment: Charges between charged bodies
Aim: To demonstrate the forces of static electricity
Materials: glass/perspective rod, 2 polythene rods, silk cloth, woolen cloth and 2 watch-glasses
Method
Testing simple cell electrodes ZIMSEC O Level Combined Science Notes: Experiment: To measure the potential difference of a simple cell
Aim: To measure the potential difference of a simple cell when different electrodes are used
Materials: dilute sulphuric acid, voltmeter, beaker, leads and crocodile clips, magnesium ribbon,lead foil, copper foil, […]
A simple motor. Image credit youtube.com ZIMSEC O Level Combined Science Notes: Electric motors
A bridge made of ice cream sticks. Image credit pinterest.com ZIMSEC O Level Combined Science Notes:Experiment: Comparing roof truss structures
Aim: To determine which structure is best for roof trusses/bridge girders
Materials: Poplar wood /ice cream sticks/grass straws, stikistuff/drawing pins/glue, tin of sand, […]
A pier bridge. Image credit sehinc.com ZIMSEC O Level Combined Science Notes: Pier Bridge
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ZIMSEC O Level Combined Science Notes: Pumps: Lift pump
A man smoking and selling Tobacco at an Auction floor. Image credit voanews.com ZIMSEC O Level Combined Science Notes: Substance Abuse: Smoking
Image credit citifmonline.com ZIMSEC O Level Combined Science Notes:Contraception: The pill
How it works
Sewage treatment works at Morton Jaffray,Harare. Image credit hararenews.co.zw ZIMSEC O Level Combined Science Notes: Centralised Sewage Treatment Works
Performance related pay can improve performance. Image credit loophaiti.com ZIMSEC O Level Business Studies Notes: Performance Related Pay
