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






2. 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






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






4. Smoothing & Shape abstraction.






5. Global Positioning System.






6. GIS is not a ______






7. Understand spatial relations between landmarks>shortcuts.






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






9. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






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






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






12. Provide information about a particular topic or theme.






13. Symbol on a map used to show direction






14. Blue - Green - Red - NIR....






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






17. A Complete frame






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






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






20. Representative fraction






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






22. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






23. Contour lines never _______






24. Fixed entitites - Can only take a specific value (Ex. number of students in a class - anything that is counted and not measured)






25. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






26. Digital Elevation Model






27. GIS is ________






28. 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.






29. The reverse of each other.






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






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






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






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






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






35. Google Maps or Microsoft Bing.






36. An assignment of geographic coordinates to locations.






37. The nature of relationships & connectivity between them.






38. Geographic Coordinate System.






39. 2 ______: 1. Files/records. 2. Database/collection of files.






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






41. Lines that connect points of equal value.






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






43. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






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






45. Preserve Shape






46. Deliver location / topographic information.






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






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






49. Most popular form of USGS Map

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50. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.