1.

Explain different types of scale on a topographical map

Answer»

1. Graphical Scale: This is where a line is segmented (usually with black and white blocks) to denote VARIOUS distances on the map. 

2. Verbal Scale: USES words to describe the RATIO between distance on the map and actual distance on the ground. "1 inch on the map is 10 miles" Ex: 1 inch = 10 miles

3. Fractional Scale: Uses a representative fraction to describe the ratio between the map and the real world for any particular UNIT of measurement. Ex. 1:100000

The fractional scale commonly requires unit CONVERSION. If the fractional scale is 1:100000, and the distance between two points on the map is 2 inches, then the distance between those points in the real world is 200000 inches (2 x 100000 - from the fractional scale), but this measurement isn't too useful




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