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lessons 3 and 4

TermDefinition
surveying the process of gathering data for a map by using instruments and the principles of geography
digitizing converting info into numbers for use by a computer
pixel one bit of a digitized image
aerial photograph a photo taken form a camera mounted in an airplane
satellite image A picture of the land surface based on computer data collected from satellites
GPS A navigation system that uses satellite signals to locate a radio receiver on earths surface
GIS A system of computer hardware and software used to produce interactive maps
topographic map A map that shows surface features of a given area
contour line A line on a topographic map that connects points of equal elevation
contour interval The difference in elevation from one contour line to the next
index contour On a topographic map, a heavier contour line that is labeled with the elevation
Created by: mwienclaw002
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