Test your basic knowledge |

GIS: Geographic Information Systems

Subject : it-skills
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. 80 % of all information contain _________






2. The smallest pixel size visible in an image - the limit of magnification






3. A Complete frame






4. Real Things (trees - forests - cities etc).






5. A tabular file containing rows and columns; descriptive attributes about some object such as a geographic feature are contained in each row






6. GIS is ________






7. Connectivity: ___________. 3 elements 1. Nodes & vertices define the shape of the arc. 2. Arcs have a from-node (or starting node) & a to-node (or ending-node). 3. Arcs only join at nodes.






8. 1. E - Ellipsoid dimensions. 2. D - Datum origin. 3. A - Angular alignment.






9. Arcs only ___ at Nodes






10. The study of place names - origins - history & meanings.






11. Thematic map that uses dots to represent the frequency of a variable in a given area.






12. Identify unique points - patterns or features in space.






13. People creating their own maps - on their own terms by combining elements of an existing toolset.






14. Townships were six miles square - and were subdivided into 36 sections - each section consisting of one square mile. One section of each township was set aside to support public education - and the remaining sections were to be sold at public auction






15. 2 common _______: 1. Vector. 2. Raster.






16. 2 ______: 1. Files/records. 2. Database/collection of files.






17. The ability to link files together.






18. GIS is not a ______






19. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






20. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






21. Shift in delivery (eg - require user interaction).






22. The 5 __________: TTCETH - 1. Triangle table 2. Triangle-Node table 3. Coordinate table 4. Triangle-Edge table 5. Hull-Edge table.






23. User generated content (UGC). Volunteered geog. info (VGI). Professional vs amateur. Neogeography vs GIS.






24. Digital Elevation Model






25. Can not be made from other colors






26. Assigning location information to text & discourse.






27. 1. An array of regulary spaced cells or pixels. 2. Each cell holds attributes (values).






28. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






29. To avoid corrupt data!






30. Geographic Coordinate System.






31. Maps are restricted to a __________.






32. A reference system (geographic coordinates)






33. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






34. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






35. Map in which some thematic mapping variable is substituted for area (like a graph in a map)






36. Preserve Shape






37. The 5 components of a TIN: NETHT - 1. Nodes 2. Edges 3. Triangles 4. ___ 5. Topology.






38. The 3 _____: 1. True. 2. Magnetic. 3. Grid.






39. Defined by NOIR NOIR N-Nominal - qualitive data. O-Ordinal - order or ranking. I-Interval - numeric scale - arbitrary units. R - Ratio - fixed origin - continuous scale.






40. DBMS used for: _______ - access - organize & edit.






41. Are made with GIS






42. 3 topological concepts: 1. Connectivity - arcs connect to each other at nodes. 2._______ - arcs that connect to surround an area define a polygon. 3. Contiguity - arcs have direction & left & right sides.






43. Deliver location / topographic information.






44. Classes based on natural groupings through examination of histogram (good: minimizes differences bad: data range uneven)






45. The range of wavelengths sampled by a remote sensor.






46. LN 1. L - Level Surfaces. 2. N - NAVD88.






47. The reverse of each other.






48. Title - legend or key - grid system - distance scale - direction and compass rose






49. Application Programming Interfaces (increases access like my maps on google).






50. Provide information about a particular topic or theme.