Unit 4: Conventional signs, sketch maps and plans A. What are conventional signs? Conventional signs...
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Transcript of Unit 4: Conventional signs, sketch maps and plans A. What are conventional signs? Conventional signs...
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
Explains the exact meaning of the symbols
Usually placed at the bottom of each map
Key
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Unit 4: Conventional signs, sketch maps and plans
Sketch map
A simple and rough map
Can only show important features
Cannot show all the details of an area
Not to accurate scale
B. What is a sketch map?
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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) a scale(ii) a north sign(iii) conventional signs(iv) a key(v) a title Next
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
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Some common conventional signs