Map scale definition Flashcards
How is Map Scale represented
It is represented as a scale ratio
1 : r
Does it have have units?
1 : r
No 1 and r have no units
for example 1 : 50000
How do we represent Map Scales?
Map Scales are based on the representation of one unit
not 2 : 20000 or 3 : 60000
must be simplified to 1 : 10000 or 1 : 20000
What are map scales used for?
Map scales can be used to find actual distances and represented distances on a map
Given a map scale 1 : 5000
How to find actual distance given the map distance?
We multiply the map distance by 5000
for example if map distance is 2 cm
actual distance = 2 * 5000 = 10000 cm
Given a map scale 1 : 5000
How to find map distance given the actual distance?
We divide the actual distance by 5000
for example if actual distance is 2000 m
map distance = 2000 / 5000 = 0.4 m