What are conventional signs?

What are conventional signs?  Conventional

signs are symbols used on maps to represent different features.  The symbols are explained in the key of the map.

What are the colors used on a map? – water bodies such as rivers,ponds,seas,etc.  Black / grey – man-made features including buildings, paths, slope, etc.  Brown – contour lines and sands.  Green – natural vegetation; park; farmland  Red/ pink – roads  Blue

What are the common symbols used on a 1:20 000 map of Hong Kong?  1:20

000 maps are common maps used in Hong Kong to show physical and human features.  For examples :Human feature -- Fire station, sports ground, hospital, railway station, school, etc.  Physical features – sand, woodland, cultivation, swamp, etc.

Do conventional signs differ on different maps?  Maps

can be drawn at different scales. Some are larger map scales, but some are small scale maps.  Maps with different scales have different conventional signs.