QCAA Earth & Environmental Science study guide
QCAA Earth & Environmental Science · Work through your exam, one topic at a time.
Earth & Environmental Science is a General senior syllabus offered by the Queensland Curriculum & Assessment Authority (QCAA) for Queensland senior secondary students. The current syllabus is the Earth & Environmental Science General senior syllabus 2025, written for implementation with students who will complete their study of the course in 2026 or beyond. The course sits within the Sciences learning area and is studied across four units, with Units 3 and 4 forming the assessed pair that external assessment draws on. Assessment combines school-based instruments and external papers. Topics on this exam: Unit 3 and Unit 4. The QCAA Earth & Environmental Science study guide has 2 sections and about 709 words.
01Unit 3: Earth's Systems and the Rock Cycle
Unit 3 asks you to treat Earth as four connected spheres - atmosphere, hydrosphere (including the cryosphere), geosphere and biosphere - and to trace matter and energy between them. Candidates must understand plate tectonic processes (divergence, convergence, transform boundaries), the rock cycle, and how weathering, erosion, transport and deposition link the geosphere to the hydrosphere and atmosphere. You should be able to interpret stratigraphic sequences using superposition, cross-cutting relationships and index fossils, and to explain how the fossil record and isotopic dating constrain Earth's history. Confusing weathering with erosion.
367 words, about 2 min02Unit 4: Earth's Resources, Change and Human Impact
Unit 4 shifts from Earth processes to how those processes supply resources and how human activity alters them. Candidates must understand the formation and distribution of non-renewable resources (fossil fuels, mineral ores, groundwater), renewable resources and their limits, and the biogeochemical cycles - carbon, nitrogen, phosphorus and water - that govern availability and environmental impact. You should be able to analyse data on resource extraction, emissions and land use, and to evaluate management strategies against criteria such as sustainability, cost and equity. Calling a resource renewable without qualification.
342 words, about 2 min