SPM Additional Science case studies
SPM Additional Science · Put your knowledge to work in context.
SPM Additional Science is a Malaysian upper-secondary elective taken alongside core Science, aimed at students who want a stronger grounding in physics, chemistry and biology than the compulsory Science syllabus provides. It suits candidates planning to enter science-based pre-university programmes, matriculation, or technical fields, and those who simply want a wider scientific literacy. The SPM Additional Science case studies are 5 cases and about 3,154 words.
1Trolley on a Ramp: When the Ticker Tape Disagrees with Theory
A group of students set up a 2.00 m ramp inclined at 12.0° to the horizontal. They release a 1.20 kg trolley from rest and record its motion with a ticker-tape timer vibrating at 50 Hz.
664 words, about 3 min2The Extension Lead That Keeps Tripping
A student’s study room is supplied by a 240 V circuit protected by a 13 A fuse. The room contains a 1.20 kW fan heater, a 60 W desk lamp, a 150 W laptop charger, a 900 W printer and a 2.00 kW kettle.
691 words, about 3 min3Heat, Sweat and Concentrated Urine
A 22-year-old labourer works for 6 hours in a factory at 34 °C and 80% relative humidity. The factory has no air conditioning and only one working fan.
598 words, about 3 min4Marble Chips and Acid: When the Rate Curve Surprises
A student reacts 5.00 g of marble chips (calcium carbonate, CaCO3) with 50.0 cm³ of 0.200 mol/dm³ hydrochloric acid at 25 °C. She collects the carbon dioxide in a gas syringe and records the volume every 30 s.
621 words, about 3 min5The Pond That Died Overnight
A small pond next to a vegetable farm receives runoff after heavy rain. Before the rain, the pond had 8 mg/dm³ dissolved oxygen, 0.5 mg/dm³ nitrate, and 25 species of invertebrates.
580 words, about 3 min