Christopher Columbus Wanted to find a sea route to India. He prepared a map of the known world. The world looked smaller in his map. He sailed westward to reach India and he landed at a place shown as India on his map but it was not India. https://wp.me/pawmDN-66He had reached the north America. It means Columbus had prepared a wrong map and the sacle of his map also incorrect. Thus, his map showed him wrong distance.
A map is a representation of the round earth on a flat piece of paper. Maps show us what the earth would look like if we cloud see it from above. The purpose of preparing a map is to show thing as they appear in their true location, either in isolated or in relation to some other feature.
Maps of the world are often either political or physical. The most important purpose of the political map is to show territorial borders, the purpose of the physical map is to show feature of geography such as mountain, soil type or lands use. Geological maps show not only the physical surface, but also characteristics of the underlying rock, fault lines and subsurface structures.
Types Of Maps
Depending on the purpose of map making, the following types of maps are drawn on the basic of the area covered :
When the area covered is samll such as on a topography map which may have a scale of 1:50,000 or 1:25,000.
when the area coverd is a large such in a school atlas which may have a scale of 1:1000,000.
3.Symbols and shades
A simple coding systems has been develop to represent the features shown on the map. Besides the list of convention symbols, colors and shades are used to show certain feature like blue for water and different shades, ranging from the densest to the lightest, representing the range of occurrences of any phenomenon.