Mapping Skills

Unit 7 > Social > Class 9 > Samacheer Kalvi - English Medium

Objectives


- To introduce maps - To read maps using its components - To learn the methods of surveying and other techniques of acquiring map data like aerial photography and satellite remote sensing - To gain knowledg

Recap


- Surveying is the process of recording the measurements of a land area. - Anaximander was the first ancient Greek to draw a map of the known world. - Maps can show the whole or a part of the world. - The art and science of map making is called Cartography. - A map should include certain components namely, the title, scale, direction, grid reference, projection, legend, conventional signs and symbols. - Grids are sets of lines for defining a location on a map. - Remote sensing means acquiring information of things / places from a distance. - Global Navigation Satellite System (GNSS) helps to locate, monitor and track a usersm vehicle anywhere in the world. - GIS is a combination of computer hardware, software, geographic data and the personnel.