Syllabus mapping (NESA Geography 11–12, 2022)
Focus area: Human–Environment Interactions · Content: land cover change — the nature and spatial distribution of natural and human-induced change to Earth's natural systems; evidence and causes of climate change.
Outcomes addressed
GE-11-01 characteristics & spatial patterns
GE-11-02 processes & influences across scales
GE-11-03 opportunities/challenges & perspectives
GE-11-05 analyses & synthesises sources
GE-11-08 mathematical techniques (graph/data)
GE-11-09 communicates understanding
Note on outcome codes: the old pipeline lesson used earlier labels (e.g. “GE11-2”). These have been re-mapped to the current 2022 codes above — verify against your school's scope & sequence.
Key geographical concepts
environmentchangeinterconnectionscalesustainability
Activities — model answers
Activity 1 · Sort the drivers
Model
Natural: volcanic eruption, lightning bushfire, solar cycles, earthquake, Earth's axial tilt.
Human-induced: burning coal, clearing forest, car exhaust, overgrazing, aerosol pollution.
Both/depends: a lightning bushfire is a natural ignition, but its
severity is worsened by human-driven warming and drought — a natural hazard amplified by anthropogenic change. That interaction is the point of the topic.
Activity 2 · Read the CO₂ curve
Model
(1) ~285–290 ppm in 1850; over 420 ppm now. (2) ~140+ ppm increase from the ~280 ppm pre-industrial baseline. (3) “Steep” / “exponential” / “hockey-stick” — significant because the sharp post-1950 rise coincides with mass fossil-fuel use, pointing to a human driver. (4) Burning fossil fuels and deforestation.
Activity 3 · Explain the mechanism
Model
Chain: burn fossil fuels →
release CO₂ → enhanced greenhouse effect →
heat trapped → lower atmosphere warms. One sentence: “Burning coal, oil and gas releases carbon dioxide, which enhances the greenhouse effect by trapping outgoing heat, warming the lower atmosphere.”
Double hit: deforestation both releases the carbon stored in trees
and removes a carbon sink, so less CO₂ is absorbed — emissions up, absorption down.
Activity 4 · Spatial variation
Model
Arctic — faster (~4×): ice–albedo feedback (melting bright ice exposes dark, heat-absorbing ocean).
Europe — faster (~2×, fastest-warming continent): circulation changes, land warms faster than ocean.
India — slower: sulphate aerosols reflect sunlight (a harmful, temporary “mask”).
East Antarctica — slower: ozone-hole-strengthened circumpolar winds and cold Southern-Ocean meltwater.
Ice–albedo feedback: a self-reinforcing loop where melting ice lowers surface reflectivity, so more heat is absorbed, melting more ice.
Activity 5 · Australian evidence file
Model (BoM/CSIRO State of the Climate 2022)
Air temperature:
+1.47 °C since 1910. Sea-surface temperature:
+1.05 °C since 1900. SW WA cool-season (Apr–Oct) rainfall:
down ~15% since 1970. Extreme fire weather:
increased, fire seasons longer.
Accept the current edition's updated figures if students find a newer report — reward correct sourcing.
Activity 6 · Essay plan
Model plan
Intro: define natural vs anthropogenic change; thesis = they interact, humans now dominate the rate.
Body 1: natural drivers (orbital cycles, solar, volcanoes, succession) and timescales.
Body 2: human drivers (fossil fuels → CO₂ mechanism; deforestation double-hit).
Body 3: interaction/amplification — warming worsens drought/fire; Arctic ice–albedo feedback; tipping points; Australian BoM evidence.
Conclusion: the Anthropocene idea — systems can no longer be studied in isolation.