MAP SCALE - Mrs. Blake's Website

MAP SCALE - Mrs. Blake's Website

Definition: A Map Scale is a statement of a measure on a map and the equivalent measure on the Earth's surface. Function: A map scale lets you measure the distance on

a map then figure out how far that distance is in the real world. 3 Types of Map Scales 3. Direct Statement

A direct statement scale is a statement that indicates the scale of the map. Example1: 1cm to 10 km

1cm on the map represents 10km in the real world If the distance between Here and There is 3cm (3 x 10) therefore 3cm = 30km 1. Linear Scale

To use a linear scale, put a ruler over top of the scale, and then measure the distance on the map. 2. Representative Fraction A Representative Fraction expresses what a unit on the map represents in the real world.

These can be either metric or imperial it doesnt matter. Example: 1:50 000

One unit on the map represents 50,000 units in the real world. 1 cm on the map would represent 50,000 cm on earth. Converting

Converting an R.F scale to a Direct Statement scale: 1 cm = 50,000 cm 1 cm = (50,000 / 100,000)km 1 cm = 0.5km **100,000 cm in a km** Converting a Direct Statement scale to an R.F scale:

1 cm = 2.5km 1 cm = (2.5 x 100,000)cm 1 cm = 250,000 cm or 1:250,000 Large Scale vs. Small Scale Small Scale Maps

World or country map = small scale (1:360 000 000 000) allows for an overall view, but not much detail. Ideal for travelling by

car -- cover large areas of land. Large Scale Town map or neighborhood map = larger scale, it features roads that can be

shown clearly (1cm:500m) Better for showing individual buildings in detail because they only cover a small area of land.

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