1. Preston High School Geography
Using Scale
Preston High School Geography

2. Scale
What a mapmaker has to do is put important information, from a large area, on to a small piece of paper.
To do this they must measure the size of the land to be mapped and then figure how much to “shrink” the land to fit it on the paper
The shrinking is explained by the scale of a map.

3. There are 3 different ways that scale can be expressed, LINE SCALE, WRITTEN SCALE and RATIO SCALE

4. Line/Linear Scale
A line scale uses a line drawn on a map that is then divided into units, such as kilometres. Each unit being representative of a distance in the real world.

5. Written Scale
Written scales simply states in words what scale the map is drawn to
Eg) 1 cm represents 1 km
1 cm to km
1 cm = 1 m

6. Ratio Scale
This scale is usually shown in the form 1: This means that 1 cm on the map represent cm on the ground.
Or 1 paper clip on the map would equal on the ground in real life
Or 1: means 1 pencil equals pencils in the real world

7. Small Scale vs Large Scale
What map will show us more detail? A map that is 1: or 1: ?
"Large scale" refers to maps on which objects are relatively large, "small scale" to maps on which objects are relatively small.

8. Small Scale vs Large Scale

9. You are now finished!~