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GIS FINAL EXAM QUESTIONS AND ANSWERS | 100% VERIFIED
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GIS FINAL EXAM QUESTIONS AND ANSWERS | 100% VERIFIED
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GIS FINAL EXAM QUESTIONS ANDANSWERS | 100% VERIFIED
What does GIS stand for? CORRECT ANSWERS geographic info system
what are four components of a GIS CORRECT ANSWERS -people (most important)
-hardware
-spatial data
-software
what are four things a GIS does CORRECT ANSWERS -manipulate dta
-store data
-analyze data
-display data
what is a map CORRECT ANSWERS a cartographic representation of a geographic reality
raster and vector data CORRECT ANSWERS -equal area grid cells, requires more storage space
-points, lines, and polygons
topology CORRECT ANSWERS -what is next to what and what is connected to what
what is the purpose of having data base structures CORRECT ANSWERS to organize and find info
Hierarchical data base vs network data base structure CORRECT ANSWERS -1 to 1 parent child relationship
-1 parent to multiple children
what type of data base structure is most commonly used in a GIS? CORRECT ANSWERS relational
what is the main purpose of a map projection CORRECT ANSWERS -to show a 3D earth on a 2D surface
what type of map projections is used to project an entire globe, why is this type best? CORRECT ANSWERS cylindrical has the least amount of distortion
what is the most important factor when obtaining GIS data CORRECT ANSWERS the quality of the data
Run length compression technique CORRECT ANSWERS Y, x-x Map Scale Concept CORRECT ANSWERS the ratio between the distance between two
points on the map and the same on the ground, md/gd
small scale vs large scale CORRECT ANSWERS small scale contains little detail while large scale contains lots of detail and is zoomed in
coordinate transformation: definition/importance CORRECT ANSWERS registration
it is important because the data has to overlay
sources of GIS data CORRECT ANSWERS USDA
UNH
Forestry Service
NYC Urban Planning office
NASA
3 Ways to Physically Input GIS data CORRECT ANSWERS 1.full length encoding
2.scanning (most likely)
3. digitizing
what is a datum CORRECT ANSWERS a starting point to measure from
Two common US datums CORRECT ANSWERS NAD27
NAD 83
WGS84
3 Most Common Coordinate Systems CORRECT ANSWERS 1. Lat/Long
2.UTM
3.State Planer
You are interested in analyzing loon habitat in the great lakes region covering four different states. Which is the worst choice to use? CORRECT ANSWERS State Planer because it covers four different systems
Geodesy CORRECT ANSWERS science of measuring the shape of the earth
GIGO CORRECT ANSWERS garbage in, garbage out
Boolean Algebra CORRECT ANSWERS AND: areas they overlap
NOT: areas they don't overlap
Or: areas that they both cove
spatial scope CORRECT ANSWERS the area operated on by the spatial analysis
three spatial scopes CORRECT ANSWERS -neighborhood
-global
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