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GCSE Geography · key term
A map showing movement between places using lines whose widths represent quantities; arrows can show direction.
Used by AQA and OCR
Paper 1, Paper 2, Paper 3
A map using lines of different widths to represent the size of movements between places; arrows can indicate direction.
Specification 9.1 · Paper 1, Paper 2, Paper 3
Justify a map choice by linking it to the data: for example, a choropleth suits population density by district, whereas a flow-line map suits movement between places.
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A map showing movement or connections between locations, with line width proportional to the quantity represented.
Revise: Thematic Maps and Map ConstructionChoropleth, isoline and flow-line maps are different ways of making thematic maps; they are not interchangeable. Population density is measured for areas, rainfall can vary continuously across space, and bus services connect places. Each needs a different representation.