Land use on a map rarely has one cause. The skill here is to collect two or three clues, join them with connecting words, and say what they explain together.
The lesson sits in physical and cultural landscapes on maps and builds on relating a settlement pattern to physical features.
What is a clue chain?
A clue chain links four kinds of evidence in a fixed order.
- Relief: flat, gentle or steep, read from contour spacing.
- Water: rivers, streams or swamp near the area.
- Access: roads, railways or a jetty.
- Settlement: where people live and work.
Start with relief, because it sets the limits, and finish with settlement, because it shows the people who use the land.
Worked example: an original map of Area S
An original map shows Area S. A river flows through a wide valley where the few contour lines stay between 5 m and 15 m and lie far apart. Rice field symbols cover the valley floor.
A road follows the valley edge, and a small cluster of houses sits where the road meets the river. On the hills to the north, contours crowd together and forest symbols appear.
Question: “Explain why rice is grown on the valley floor and forest remains on the hills.”
Answer: “The valley floor is flat, with contours between 5 m and 15 m, which suits field preparation. The river runs through it, supplying water for the paddy. A road along the valley edge and a nearby cluster of houses show that workers and transport are close. The hills to the north have closely spaced contours, which shows a steep slope that is hard to farm, so forest remains there.”
Four clues, each tied to a symbol, produce one joined explanation.
The mistake: a single-clue answer
A weak answer is: “Rice is grown because there is a river.” The river is one valid clue, but the answer skips relief and access and does not explain the hills at all.
The correction is to ask a fixed question after each sentence: “what else on the map supports this?” Add the next clue from the chain until the question can be answered.
Check yourself
An original map shows a plain with oil palm symbols, a wide road, a factory symbol beside the road and closely packed contours to the west. Use three clues to explain why oil palm grows on the plain.
Answer
The plain is flat, because no contours cross it, so estates can be planted and harvested easily.
The wide road lets workers and fruit bunches reach the factory beside it.
The steep contours to the west show the hills are not suited to estates, so planting stays on the plain.
What to study next
Finish the cluster with writing a map-based explanation without adding unshown facilities.
For a teacher to push you to add the extra clue each time, see online one-to-one Geography tuition.