Map scale — Geography, 11–13
A map makes a large place fit on a page, but it must show how its distances compare with real distances.
What scale means
A map is a smaller picture of a real place. Its scale tells you how a distance on the map matches a distance on the ground. For example, 1 cm might represent 1 km, so a short line can stand for a much longer journey.
Why maps need scale
Without scale, you could see that one town is farther away than another, but not how far. Travellers, builders and emergency teams need distances they can trust. Scale solves the problem of shrinking a whole landscape without losing useful measurements.
Measuring a journey
A map says 1 cm represents 2 km. The route from the station to the lake measures 4.5 cm. Multiply 4.5 by 2: the real distance is 9 km. If you walk at 3 km per hour, the journey takes about three hours, ignoring stops.
The scale trap
A common mistake is to read 1 cm as 1 km just because that feels simple. But every map chooses its own scale, and some use metres, miles or a scale bar instead. Check the map’s key first; neat-looking arithmetic cannot repair a wrong starting scale.
Scale beyond school
Hiking maps use scale to help you judge a route’s length. Architects use it on plans of buildings, and city planners use it to place roads, parks and homes. Digital maps also change scale when you zoom, showing more detail or a wider area.
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