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. A reference system (geographic coordinates)






2. Lines that connect points of equal value.






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






4. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






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






6. Preserve Direction






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






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






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






10. Google Maps or Microsoft Bing.






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






12. The 4 types of ___________:SADD. 1. S - Shape: Conformal. 2. A - Area: Variant. 3. D - Direction: Preserved. 4. D - Distance: Variant.






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






14. 80 % of all information contain _________






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






16. Geographic Coordinate System.






17. When distances from the center of the projection to any other place on the map are uniform in all directions.






18. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






19. A Complete frame






20. GIS is ________ - spatial analysis & dependent on the computer.






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






22. The ability to link files together.






23. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






24. A data classification method that divides a set of attribute values into groups that contain an equal range of values






25. An assignment of geographic coordinates to locations.






26. Description by name: ex London






27. 2 ______: 1. Files/records. 2. Database/collection of files.






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






29. Assigning location information to various media (photos - video - music).






30. Essentials of DBMS: Each record has a ________






31. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






32. Representative fraction






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






34. Points taken at regular intervals from the cumulative distribution function (CDF) of a random variable.






35. Contour lines never _______






36. 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.






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






38. Accuracy - reliability - responsibility.






39. GIS is ________






40. The reverse of each other.






41. Relative to another known feature






42. Arcs only ___ at Nodes






43. Area of the Earth that is displayed in each image






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






45. GIS is not a ______






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






47. Can not be made from other colors






48. Explanatory list of symbols on a map






49. The nature of relationships & connectivity between them.






50. Where 2 lines/arcs intersect - an endpoint - or a point along a line.