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17 Bearings and scale drawing

Here are some drawings and pictures. Key words

Each one has a di!erent scale.
Make sure you learn and
understand this key word:
bearing

Estimate what length 1 cm represents on each one.
Here are some clues to help you.

t "e length of a #ea is between 2 and 3 mm.

t "e diameter of the Sun is about 1 400 000 km.

t "e length of Africa from north to south is about 8000 km.
t A football pitch is about 100 m long.
In this unit you will practise making and using scale drawings. You will also look at how scales are used
in maps. "e skill of working out real-life distances between places shown on a map is very useful. It

enables you to estimate the distance to travel and how long it will take you. You will also learn about

bearings. "ese are important in map reading. "ey give the angle of travel, from one place to another.

158 17 Bearings and scale drawing