Map legends and symbols — Geography, 11–13
Learn how a map turns real places into a small set of shared signs. Geography, 11–13 years.
A map has a visual code
A map cannot draw every tree, road and building at its real size, so it uses symbols. A blue line may mean a river, a black line a road, and a star a capital city. The legend is the map’s key: it tells you what each sign means and sometimes how colours or line widths are being used.
Why symbols are needed
The problem is that reality is too crowded and too large to fit clearly on one sheet. Map-makers choose a few signs so many people can read the same information quickly. This only works if the signs are explained; otherwise, a blue patch might be water, a park or simply decoration. Always check the legend before deciding what you see.
Reading one map
Suppose the legend shows a thick red line for a motorway, a thin black line for a local road, a blue line for a stream and a green area for a park. You find a thick red line crossing a green area, with a blue line beside it. You can report three things: a motorway crosses a park, a stream runs nearby, and none of that proves the stream is crossed by the road.
The symbol is not the thing
A common mistake is to treat a symbol as if it showed the exact shape or size of the real feature. That feels reasonable because a picture usually represents what it looks like. On a map, however, a tiny square may stand for a large school, and a line may be much wider than the road itself. Use the legend and the map scale together.
Signs help you navigate
You meet map symbols in hiking maps, metro diagrams, tourist plans and phone maps. They let you spot a campsite, a bus stop or a dangerous crossing without reading a paragraph about each place. When you plan a route, compare the symbol with the legend, then check whether the route is open, permitted and suitable for the distance you want to travel.
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