Map Scales and Angular Bearings

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Presentation transcript:

Map Scales and Angular Bearings

Types of Map Scales There are three main types of Map Scales: Direct Statement: Written in words Ex: 1 cm represents 1 km Representative Fraction: Scale is written in numbers as a ratio. Ex: 1:100 000 Linear Scale: This scale is shown as a divided line.

Each of the map scale types are represented differently but have the same meaning. Changing one scale to another is called scale conversion.

Map Directions A simple way to show directions is a compass rose. With a compass rose it is possible to identify any major direction. The compass rose is read starting at north and then to east, south, and west. (clockwise)

Compass Rose

Angular Bearings A compass rose is in the shape of a circle, which has 360 degrees. A compass direction can be given as a number of degrees. The number of degrees is measured between north and the required direction.

Questions Geolab 5: Angular Bearings (page 11) 1- 5 Geolab 6: Cross Country Race Page 12, 13 Geolab 7: Bay of Biscay Rescue Page 14, 15