TASC Environmental Science Level 3 case studies
TASC Environmental Science Level 3 · Put your knowledge to work in context.
Environmental Science Level 3 is a Tasmanian senior secondary course listed under the science learning area by the Office of Tasmanian Assessment, Standards and Certification (TASC), the body responsible for accrediting senior secondary courses and certifying student achievement in Tasmania. The course is designed for senior secondary students who want to study the environment as a science: the interactions between living things and their surroundings, the use and management of natural resources, and the human dimensions of environmental change. The TASC Environmental Science Level 3 case studies are 5 cases and about 2,020 words.
1Interpreting a Falling River Oxygen Reading
A volunteer monitoring group samples a slow, warm lowland river at 06:00 and again at 15:00 on a still, sunny July day. Dissolved oxygen (DO) is 8.9 mg/L at dawn and 4.6 mg/L in mid-afternoon.
586 words, about 3 min2Choosing a Remediation for Contaminated Soil
A former metal-finishing workshop is being redeveloped for housing with private gardens. Soil sampling of the 0.2-hectare site shows lead at 900 mg/kg in the top 0.3 m, against a residential screening value of 300 mg/kg, plus scattered cadmium at twice its screening value.
387 words, about 2 min3Siting a Small Wind Turbine on a Ridge
A rural community wants one 50 kW turbine on a 320 m ridge above their village. Average wind speed at 50 m height is 6.2 m/s, but the site is 900 m from the nearest house and within 2 km of a protected moorland bird area used by breeding curlew.
363 words, about 2 min4A Waste Contract That Looks Cheaper
A district council must renew its household waste contract. Bid A is a standard weekly kerbside collection of mixed recyclables and residual waste, costing 4.1 million per year with a 55% recycling rate.
363 words, about 2 min5A Wetland That Is Losing Its Water
A 40-hectare reedbed nature reserve depends on groundwater and a small feeder stream. Over five years the spring water level has dropped 25 cm, reed cover has declined at the margins, and a nitrate-sensitive plant community is being replaced by scrub.
321 words, about 2 min