1. USING MAP SCALES

2. 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.

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

4. Three Types of Scale

5.  There are three different ways to write scale. 1 cm = 250 km Stated Scale Bar Scale 1:25 000 000 Ratio Scale

6. 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.

7. 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

8. Map Scales Ratio Scale  very accurate  same unit e.g. 1cm=550cm

9. Three Types of Scale  There are three different ways to write scale. 1 cm = 250 km Stated Scale Bar Scale 1:25 000 000 Ratio Scale

10. 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)