PNG Grade 10 Science case studies
PNG Grade 10 Science · Put your knowledge to work in context.
The PNG Grade 10 Science credential is the lower secondary science result a student earns at the end of Grade 10 in Papua New Guinea, and it is the science evidence used when applying for Grade 11 selection, for technical and further training pathways, and for employment or scholarship applications. It is written for students completing Grade 10 Science in a provincial secondary school, and also for distance learners who prepare through FODE, the Department of Education's distance education arm. The PNG Grade 10 Science case studies are 5 cases and about 2,952 words.
1Tilapia pond fish kill after heavy rain
In a village near Goroka, a farmer built a pond 20 m long, 10 m wide and 1.2 m deep and stocked it with 500 tilapia. The pond is fed with kitchen scraps, and runoff from a pig pen enters through a shallow ditch.
603 words, about 3 min2Choosing a lime treatment for an acidic cocoa block
A cocoa farmer has a 0.2 hectare block near Buka. A soil test reports pH 4.8 in water and high exchangeable aluminium.
588 words, about 3 min3Sizing a solar system for a village fish freezer
A coastal village wants to run a 150 W chest freezer for fish. The compressor runs for about 8 hours in every 24 hours.
583 words, about 3 min4After the shaking stops: a tsunami decision on the north coast
a magnitude 7.9 earthquake ruptures offshore, about 80 km north of a coastal village. Shaking lasts 90 seconds and cracks a concrete water tank.
602 words, about 3 min5Why stopping TB medicine early is a population problem
A health volunteer in a settlement of 600 people follows 15 patients on tuberculosis treatment. After two months, 6 stop coming because their cough has gone and they feel strong.
576 words, about 3 min