AO2 — what examiners reward and how to write for it

AO2 carries roughly 35% of CCEA Geography marks and rewards understanding — explaining why and how things happen, and showing how places, environments and processes link together. While AO1 is the "what", AO2 is the "why" and "how".

What AO2 questions look like

Command words signalling AO2: explain, why, how, account for, show how, suggest reasons for, compare. Mark schemes reward developed reasoning chains — a fact alone earns AO1; a fact plus consequence plus link earns AO2.

Typical AO2 prompts:

• "Explain why birth rates are high in many LICs." (chain: poverty → child labour → high infant mortality → desire for many children)
• "Show how urbanisation affects the environment." (link people → demand for housing → loss of green space → flooding)
• "Suggest reasons why coastal erosion is faster on the Holderness coast than the Antrim coast." (geology + wave fetch + management)

How to score AO2 marks

Write chains of reasoning, not a single fact.

AO1 only	AO2
"The Holderness coast erodes by ~30 cm/yr."	"The Holderness cliffs are made of soft boulder clay (geology) which the Atlantic waves erode by hydraulic action; this is why erosion reaches 30 cm/yr — much faster than the resistant basalt cliffs of the Antrim coast."

Each clause adds another link in the chain → another mark.

Linking places and processes

Strong AO2 answers connect:

• Place ↔ process: erosion at the Giant's Causeway → freeze-thaw weathering of basalt joints.
• Place ↔ place: rural Maharashtra (push) ↔ Mumbai (pull).
• Process ↔ process: rapid urbanisation → loss of green space → reduced infiltration → flash flooding.
• Local ↔ global: Belfast diesel traffic → CO₂ → global warming → Northern Ireland sea-level rise.

Common phrasings that score AO2

• "This is because…"
• "As a result…"
• "This leads to…"
• "Because of this, …"
• "In contrast to X, Y …"

CCEA tip

If a question asks "explain why", count the marks (e.g. 4 marks). Aim for that many distinct linking sentences. Two facts + two consequences = 4 chained clauses = 4 marks.