Unit 4: Conventional signs, sketch maps and plans
A. What are conventional signs?
Conventional signs
 Represent different features on a map
 Designed by specialists and understood by map users
 Help us to read and understand what a map shows
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Unit 4: Conventional signs, sketch maps and plans
Key
 Explains the exact meaning of the symbols
 Usually placed at the bottom of each map
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Unit 4: Conventional signs, sketch maps and plans
B. What is a sketch map?
Sketch map
 A simple and rough map
 Can only show important features
 Cannot show all the details of an area
 Not to accurate scale
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Unit 4: Conventional signs, sketch maps and plans
C. What is a plan?
Plan
 A large-scale drawing of a place as seen from above
 Can show detailed features of a place
 When you draw a plan, make sure it has:
(i)
(ii)
(iii)
(iv)
(v)
a scale
a north sign
conventional signs
a key
a title
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Unit 4: Conventional signs, sketch maps and plans
Terms to learn:
 Conventional signs - symbols used in maps to represent
various features
 Sketch map - a simple drawing which shows only the
important features of a place
 Plan - a large-scale and detailed drawing of a place or building
as seen from above
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Unit 4: Conventional signs, sketch maps and plans
Some common conventional signs
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