Mid-Term Exam


Geographic Information Systems


Dr. Michael P. Peterson
Department of Geography / Geology
University of Nebraska at Omaha

Total: 100 points

1) Definitions: (20 pts; 2 pts each) USE FIGURE, IF POSSIBLE.
a. topology-

b. attribute-

c. cadastre-

d. terrain trafficability functions-

e. digital elevation model-

f. line coordinate thinning-

g. arc/node-

h. thiessen polygons-

i. internet-

j. edge matching-

2) Describe three uses of a GIS that exemplify the diversity of possible applications. (15 pts)



3) A GIS may be viewed as the latest method for capturing, displaying, analyzing and understanding the spatial world. Why do humans engage in this activity? Describe the development of this intellectual activity through time. (10 pts)

4) List five methods of data input for a GIS? (5 pts)
a. ________________________
b. ________________________
c. ________________________
d. ________________________
e. ________________________

5) List and describe five different types of digital geographic data that are available from U.S. government sources (spatial and attribute). (10 pts)





6) What are the relative merits of manual digitizing vs. scanning? (10pts)

7) Describe the major technological/methodological problems facing GIS development. Are the major problems in data input, data management, manipulation or data output? (10 pt)

8) Describe how slope and aspect are calculated from a digital elevation model then calculate the slope and aspect in the example below. (10 pt)

9) Describe the important developments in hardware and software during the past 30 years by decade that made GIS both possible and accessible to a larger user base? (10 pt; continue on back)