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HKCEE MAP READING SKILLS:
Basic Reference Certificate Geography Revision Exercises – Issues & Map-Reading P.49-76
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Basic Map Reading Skills: Check List
Conventional Signs Grid References Scales Direction Gradient Cross-section & Relief Features
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Conventional Signs Reference - WB:49
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Conventional Signs Reference - WB:49
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Conventional Signs Reference - WB:49
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Conventional Signs Reference - WB:49
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Conventional Signs Reference - WB:49
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Conventional Signs Reference - WB:49
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Grid References (WB:51-52)
to tell locations on a map two sets of lines vertical – eastings (number values increase eastwards) horizontal – northings (number values increase northwards) grid square 4-figure location 6-figure
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Grid References
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Grid References (WB:53) 147343 1132
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Scale (WB:54-55) to show the number of times that the actual size of the ground has been reduced helps us find out real distance / area from the map
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Scale Statement Scale Representative Fraction (R.F.) Linear Scale
describes the scale in words e.g. 1 cm to 200m Representative Fraction (R.F.) shows scale in the form of a fraction / ratio e.g. 1:20000 Linear Scale uses a line to show the scale e.g.
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Direction Reference – WB:59
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Direction Reference – WB:59
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Direction Reference – WB:60
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Cross Section
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Cross Section
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Cross Section
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Cross Section
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Cross Section
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Vertical Exaggeration
Reference – WB:72
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Vertical Exaggeration
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Vertical Exaggeration
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Relief Features Reference – WB:65-68
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Relief Features
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Relief Features
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Relief Features
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Relief Features
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Relief Features
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gentle slope steep slope concave slope convex slope stepped slope spur valley hill ridge saddle
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Gradient
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Gradient
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Gradient
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Gradient
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Calculate the Average Gradient of the Stream from A (source) to B (bridge)
Gradient: 1 in HD/VD HD: measured actual length of the red line is 7.5cm Map Scale is 1 : 20000 Actual Distance: (7.5 X 200)m = 1500m A B B: 80m VD: 340m – 80m =260m Gradient: 1 in 1500m/260m = 1 in 5.8
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