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VCE Environmental Science exam 2026Exam: Tue 10 Nov · VCAA timetable

Your VCE Environmental Science exam:

When and how long

  • Environmental Science2.00 pm to 4.15 pm2 h plus 15 min reading time

VCAA: the reading period is included in the times shown, and each examination starts with a 15-minute reading period unless otherwise specified. Arrive at least 30 minutes before the start time. A few language exams run earlier in October.

Source: 2026 VCE examination timetable (VCAA), checked Wednesday 23 September 2026. Where a start time, reading time or duration isn't shown, the timetable doesn't publish it: check your personal timetable and the front of your paper.

What the exam covers

We don't have past-paper frequency data for this exam, so here is the course, module by module. Make sure every module is covered.

Night-before and exam-morning checklists

The night before

  • Check the start time of each exam; the 15-minute reading period is included in the timetable times.[2]
  • Pack a transparent pencil case: pens, pencils, highlighters, erasers, sharpener and a ruler.[1]
  • Pack your approved calculator and spare batteries (CAS only where allowed: General Maths, Methods Exam 2, Specialist Exam 2).[1]
  • Still water in a clear plastic bottle, labels removed, no more than 1500 mL (it stays off your table).[1]
  • Stop revising around 8 pm, set two alarms and sleep.[1]

Exam morning

  • Eat a real breakfast.[1]
  • Arrive at least 30 minutes before the start time.[2]
  • If you are up to 30 minutes late you still get full writing time, but no reading time.[1]
  • Leave phones, smart watches and fitness trackers outside the exam room.[1]
  • In reading time: read and plan, but don't write or use your calculator.[1]
  • You can't leave before 30 minutes of writing time or in the last 5 minutes.[1]
  1. VCE exam day: what to actually expect
  2. VCAA: VCE examination timetable

Exam-week survival kit: The last 7 days · The night before and exam morning · What to bring, and what's banned · How to use reading time · If you're sick or something goes wrong · Handling exam-week stress.

Last-week revision

VCE Environmental Science cram sheet

Key formulas, definitions and facts copied from our Environmental Science syllabus pages. One page when printed.

Unit 3: How can biodiversity and development be sustained?

The taxonomic hierarchy

From broadest to most specific: Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species. Each level is nested inside the one above. A useful mnemonic is "Did King Philip Come Over For Good Soup."

From: Classification, taxonomy and naming of organisms (binomial nomenclature, taxonomic hierarchy)
Four categories of ecosystem services

Supporting (soil formation, nutrient cycling, primary production), provisioning (food, water, timber, medicine), regulating (climate, flood control, water purification, pollination) and cultural (recreation, tourism, spiritual value). Supporting services underpin all the others.

From: Levels and value of biodiversity (genetic, species, ecosystem, ecosystem services)
HIPPO threats

Habitat loss and fragmentation, Invasive species, Pollution, human Population pressure and Overexploitation are the leading drivers of biodiversity loss, with climate change amplifying all of them. Habitat loss is generally the largest single driver.

From: Threats to biodiversity and extinction (habitat loss, invasive species, overexploitation, pollution)
Simpson's index of diversity

SID=1−∑ni(ni−1)N(N−1)SID = 1 - \frac{\sum n_i(n_i - 1)}{N(N - 1)}

From: Measuring biodiversity (species richness, evenness, Simpson's diversity index)

Unit 4: How can climate change and energy use be managed?

The three Milankovitch cycles

Eccentricity (orbit shape, about 100,000 years), obliquity (axial tilt, about 41,000 years) and precession (axial wobble, about 26,000 years). They change the timing and distribution of solar energy, triggering glacial and interglacial cycles, then feedbacks amplify the change.

From: Natural drivers of climate change (Milankovitch cycles, solar variation, volcanic activity, feedback mechanisms)
Sources and sinks

A carbon source releases more carbon than it absorbs (burning fossil fuels, deforestation, respiration). A carbon sink absorbs more than it releases (growing forests, oceans, soils). The balance of sources and sinks sets the amount of carbon dioxide in the atmosphere.

From: The carbon cycle (carbon stores, sinks and sources, fluxes, human disturbance)
The four spheres

Earth's climate system is the interaction of the atmosphere (gases), hydrosphere (water and ice), biosphere (living things) and lithosphere (rock and soil). Energy and matter (especially carbon and water) move continuously between them, so a change in one affects all.

From: Earth's climate system and energy balance (four spheres, albedo, radiation budget)
The greenhouse mechanism

Incoming shortwave solar radiation warms the surface; the surface re-radiates as longwave infrared; greenhouse gases absorb and re-emit this infrared, returning some to the surface. This natural process keeps Earth about 33 degrees Celsius warmer and habitable.

From: The greenhouse effect and enhanced warming (greenhouse gases, radiative forcing, global warming)

Unit 3: How can biodiversity and development be sustained?

In-situ vs ex-situ

In-situ keeps species and ecosystems in their natural home and lets natural selection continue; ex-situ removes them to zoos, sanctuaries or seed banks as an insurance population. In-situ is usually preferred; ex-situ is a safeguard.

From: In-situ and ex-situ conservation (protected areas, corridors, captive breeding, seed banks)

Unit 4: How can climate change and energy use be managed?

Mitigation vs adaptation

Mitigation reduces or removes greenhouse gas emissions (switching to renewables, efficiency, reforestation, carbon pricing). Adaptation adjusts to changes already underway (sea walls, drought-tolerant crops, bushfire planning). Effective policy uses both.

From: Managing energy use and the low-carbon transition (efficiency, mitigation, adaptation, renewables)

Efficiency (%) = (useful energy output divided by total energy input) multiplied by 100

From: Energy concepts and efficiency (energy, power, joules, watts, energy conversions, efficiency)
Renewable vs non-renewable

Non-renewable sources (fossil fuels, nuclear) are finite stores; fossil fuels also emit large amounts of CO2. Renewable sources (solar, wind, hydro, geothermal, biomass) are naturally replenished and low-carbon, but most are variable and depend on location.

From: Renewable and non-renewable energy sources (fossil fuels, nuclear, solar, wind, hydro)
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