To explain a resource distribution, state the pattern, point to the evidence on the supplied map, and link the evidence to a cause. Location alone earns little.
This lesson is part of natural resources and energy choices. If the word renewable still blurs with non-renewable, read classifying resources using a renewal timescale first.
What are the three steps of a distribution answer?
Step one is the pattern: where the resource is, and where it is not. Step two is the evidence: what the map shows at those places. Step three is the link: why that evidence would lead to the resource.
Write them in that order. Each step can be one sentence.
Worked example: a schematic mineral map
This is an original schematic map, not a real place. A question shows a region with three zones and says a tin-bearing mineral is found in River Valley Zone 2.
| Zone | Rock type | Nearby feature | Tin mineral found |
|---|---|---|---|
| 1 | Limestone | Coastal plain | No |
| 2 | Granite | Mountain foothills with river | Yes |
| 3 | Sandstone | Inland plateau | No |
Step one, pattern: tin is found only in Zone 2, which is in the foothills.
Step two, evidence: Zone 2 lies on granite, and a river flows through it. Zones 1 and 3 have no granite.
Step three, link: tin minerals can be linked with granite intrusions. Weathering of the granite can free the mineral, and the river can carry and deposit it in the valley, which helps explain why it collects in Zone 2.
Together, the three steps read: “Tin is found only in the granite foothills of Zone 2. Zone 2 has granite and a river, whereas zones 1 and 3 do not, so the mineral probably formed in the granite and was concentrated by river deposition.”
The mistake that loses marks
A weak answer is “Tin is found in Zone 2 because there is a lot of tin there”. This repeats the question and gives no evidence.
| Weak answer | Stronger answer |
|---|---|
| Tin is in Zone 2 because it is a tin area. | Tin is in Zone 2, which has granite, whereas the other zones do not. |
| It is near the mountains. | The foothills have a river that may deposit weathered mineral. |
When a map gives a clue and not a proof, hedge the cause with probably or may, and quote the evidence exactly.
What if the evidence is incomplete?
Suppose the map shows granite in Zone 2 but the question also mentions Zone 4, which has granite and no tin. Do not hide this. Say granite is linked with the resource, but the map shows at least one granite zone without it, so rock type alone is not the full reason.
Naming a limit like this shows you are using the evidence and not forcing it. The claim and evidence revision desk helps you tighten each claim.
Check yourself
A map shows a coalfield in Basin X. Basin X is a low, flat area with layered sedimentary rock. The hills around it are volcanic rock with no coal. Write a three-step explanation.
Answer
Pattern: coal is found only in Basin X, not in the surrounding hills.
Evidence: Basin X is low-lying and has layered sedimentary rock, whereas the hills are volcanic rock.
Link: coal forms from plant matter buried in layers of sediment, so a sedimentary basin suits it, while volcanic rock does not hold layers of buried plant material. The map does not show the age of the rock, so the exact formation time cannot be stated.
What to study next
Next, use resources in a decision with comparing energy sources fairly. For a teacher to check your explanations, see online one-to-one Geography tuition.