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Map Scale
An odd map?
Thematic Map: Poverty Rates
Large Scale and Small Scale MapsScale determines the amount of detail a map will show.
Large Scale Maps: show a large amount of detail and a small area.
e.g. 1:50 000, 1:25 000 Small Scale Maps: show a small amount of detail over a large area.
e.g. 1:250 000, 1:500 000
*a map of the world that fits on an 8.5 x 11 inch piece of paper has a scale of 1: 100 million.
Scale
Area Detail Example
Large Scale Maps
(1:50 000 or less)
Small A lot (LOTS)(streets, schools, railways, …)
Topographic maps, road maps, city bus maps
Small Scale Maps
(1:250 000 or more)
Large A little (SMALL)(borders, lakes, large rivers, …)
Globes, world maps, atlases
Scale – Mapping Our Location
• North Grenville District High School
Scale – Mapping Our Location• North Grenville
District High School1cm = 100 ft
Scale – Mapping Our Location
• North Grenville District High School
1 cm= 500 ft
Scale – Mapping Our Location
• North Grenville District High School
1 cm= 2500 ft
Scale – Mapping Our Location
• North Grenville District High School
• 1 cm = 25 miles
Scale – Mapping Our Location• North Grnville District
High School
1 cm= 250 km
Map Scale
Direct Statement (DS): a statement about a distance on the map in comparison to the represented distance in the real world.
e.g. “one centimetre represents four kilometres”1 cm = 10 km
Map Scale
Linear Scale (LS): a straight line divided into units which can be used for measuring distance on a map.
Map Scale
• Representative Fraction (RF): a fraction that involves no mention of units. Because units are ignored, whatever you assign to one side must be assigned to the other.
e.g. 1: 50 000 1 cm : 50 000 cm
Scale: The Town of Gorham, Maine
Scale: Overview