Maps And Computers Flashcards
Surveying
Process where map makers determine distances and elevations using instrument and the principles of geometry
Computers have…
Revolutionized map making
Map makers
Can store process and display electronically
Map makers can digitize
Data, or convert locations of map points to numbers
Computers automatically make…
Maps which would take a person hours to draw
Produce maps from many…
Data sources such as satellites and the Global Positioning System (GPS)
Global positioning system (GPS)
A method of finding latitude, longitude elevations points on earth’s surface by using a network of satellites
Satellite images
Pictures of earths surface made up of thousands of tiny dots called pixels
Topographic map
Map showing the surface features of an area using symbols portray the land as if you were looking from above
To read topographic maps
You must understand the maps scale, symbols and contour lines
Contour lines
Change in elevation from on contour lines to another
Index contours
Darker line, than the others and are labeled with the elevation above sea level in round units
Topographic maps have many…
Uses in science and engineering, and are used in city and town management and recreational use also
