USING MAP SCALES

Map Scale

A scale is a statement of the relationship between distances on a map and distances in real life.

A drawing that is made according to scale will be an exact copy of the real object, but will be smaller or larger than the real object.

Map Scale

Scale drawings are often used in real life because they are very accurate, including in maps, blueprints, and architectural models.

Three Types of Scale

Three Types of Scale

There are three different ways to write scale.

• 1 cm = 250 km

Stated Scale

Bar Scale

• 1:25 000 000

RatioScale

Map Scales

Bar Scale: tells us how much map distance

represents a certain real distance. for example, the scale shows the map

distance that equals 10 kilometers in real distance.

Map Scales

Stated Scale says exactly how much distance is

represented by 1 cm for calculating distances. different unit e.g. 1 cm = 8 km

1 cm = 8 km

Map Scales

Ratio Scale very accurate same unit e.g. 1cm=550cm

Three Types of Scale

There are three different ways to write scale.

• 1 cm = 250 km

Stated Scale

Bar Scale

• 1:25 000 000

RatioScale

Example

Ratio Scale Size of the classroom 6.6m 1cm (map scale) = ? cm (real life scale) 6.6m =? cm 6.6m =660 cm 5cm (map scale) = 660cm (real life scale) 660/5 cm = 132cm 1cm( map scale)= 132cm (real life scale)