Choosing a New Zealand environment and preparing case study evidence
As with 91427, one environment prepared in real depth beats several known shallowly — the schedule grades case study evidence on its own ladder, separate from the process analysis itself.
What makes a strong environment choice
A named, specific New Zealand location — "the Franz Josef Glacier valley" or "the Waimakariri River, Canterbury", not "a mountain area" or "a river".
At least TWO clearly interacting processes with real, memorable figures — a rate (mm/year of uplift, m³/s of discharge), and a dated event (a specific storm, earthquake, or eruption).
Evidence usable for BOTH a spatial argument (two named places within the environment) and a temporal argument (two named time periods), since the exact task wording changes year to year.
A genuine INTERACTION, not just two processes that happen to occur in the same place — you should be able to state, in one sentence, how one process changes the conditions for the other.
Four New Zealand environments with a genuine interaction to build from
Environment
Two interacting processes
The interaction, in one sentence
A glaciated alpine valley (e.g. near Aoraki/Mt Cook)
Tectonic uplift + glacial erosion
Uplift raises rock into the zone of ice attack; erosion then unloads the crust, allowing further uplift.
Glacial and mountain erosion supplies far more sediment than the river can carry at low flow, forcing it to braid across multiple channels.
A volcanic plateau (e.g. the Taupō Volcanic Zone)
Volcanism + weathering/fluvial erosion
Fresh volcanic ash and pumice weather and erode rapidly compared with older rock, so landforms here change unusually fast after an eruption.
A coastal spit or barrier (e.g. Farewell Spit)
Longshore drift + fluvial sediment supply
A river delivers sediment to the coast, which longshore drift then redistributes along the shore to build the spit — cutting the river's supply changes the coast kilometres away.
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Choosing an environment you cannot quantify
A visually dramatic environment is worthless for this standard without REAL figures behind it. Before committing to an environment, check you can state at least one rate (mm/year, m³/s), one dated event, and one named comparison location — if you cannot, choose a different environment now rather than discovering the gap in the exam.
A quick pre-exam readiness check
Can you name both interacting processes and the one-sentence mechanism linking them, without notes?
Do you have at least one rate, one dated event, and two named comparison points memorised?