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






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






3. HAL - H-Human nature. A-Arbitrary/socially constructed. L-Loss of info (hiding variance within a class or group).






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






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






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






7. Relative to another known feature






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






9. Deliver location / topographic information.






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






11. 80 % of all information contain _________






12. Regulary spaced sample of points representing a surface.






13. Converts what entities into objects in the computer 1. Geometry (points - lines - polygons). 2. Measurement of attributes. 3. Accuracy &/or error.






14. A reference system (geographic coordinates)






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






16. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






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






18. Can not be made from other colors






19. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






20. Global Positioning System.






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






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






23. Digital Elevation Model






24. A Complete frame






25. Precision of a measurement with respect to time






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






27. Arcs only ___ at Nodes






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






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






30. 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.






31. GIS is ________






32. Most popular form of USGS Map

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33. Preserve Direction






34. Are made with GIS






35. Provide information about a particular topic or theme.






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






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






38. To avoid corrupt data!






39. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






40. Sailors and pilots use these maps to navigate






41. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






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






43. An assignment of geographic coordinates to locations.






44. 2 ______: 1. Files/records. 2. Database/collection of files.






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






46. GIS is not a ______






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






48. 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.






49. 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






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