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






2. Geographic Coordinate System.






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






4. Regulary spaced sample of points representing a surface.






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






6. The 2 _____ in data modelling: 1. Database. 2. Data Storage.






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






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






9. Relative to another known feature






10. Symbol on a map used to show direction






11. Arcs only ___ at Nodes






12. Assigning location information to text & discourse.






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






14. An assignment of geographic coordinates to locations.






15. 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.






16. Data Modelling - Turning entities into complex objects (geometry - quality).






17. Connect & travel between landmarks by moving thru space.






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






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






20. 2 ______: 1. Files/records. 2. Database/collection of files.






21. A line segment between 2 nodes -1 of which is a start node & the other an end node.






22. Essentials of DBMS: Each record has a ________






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






24. 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.






25. Global Positioning System.






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






27. Can not be made from other colors






28. Points - Polygons - Lines






29. Are made with GIS






30. Google Maps or Microsoft Bing.






31. A 3-D frame of reference (model of the earth) used to determine surface locations.






32. Uses coordinates (X -Y) to represent spatial features. Scale matters involve what Polygons<>points. Polygons<>lines.






33. A map containing information on only one topic or theme.






34. Accuracy - reliability - responsibility.






35. When areas on a map maintain the same proportional relationship to the areas on the earth that they represent.






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






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






38. Smoothing & Shape abstraction.






39. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






40. To avoid corrupt data!






41. Precision of a measurement with respect to time






42. Preserve Shape






43. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






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






45. Consists of F & E: 1. Features. 2. Entities.






46. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






47. Maps are restricted to a __________.






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






49. GIS is ________






50. _________ of the Real World: (S&E - S&S - G&A) 1. Selection & Elimination. 2. Simplification & Smoothing. 3. Generalization & Aggregation.