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






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






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






5. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






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






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






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






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






10. Preserve Direction






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






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






13. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






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






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






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






17. A process of mathematical conversion.






18. Accuracy - reliability - responsibility.






19. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






20. Triangulated Irregular Network.






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






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






23. Global Positioning System.






24. 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.






25. Provide information about a particular topic or theme.






26. A Complete frame






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






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






29. 2 ______: 1. Files/records. 2. Database/collection of files.






30. The acquisition of data about Earth's surface from a satellite orbiting the planet or other long-distance methods.






31. Google Maps or Microsoft Bing.






32. The nature of relationships & connectivity between them.






33. Blue - Green - Red - NIR....






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






35. Digital Elevation Model






36. Representative fraction






37. 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






38. Files in the DB can be linked or joined using the _______






39. Most popular form of USGS Map

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40. 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.






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






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






43. GIS is ________






44. Understand spatial relations between landmarks>shortcuts.






45. Description by name: ex London






46. To avoid corrupt data!






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






48. Lines that connect points of equal value.






49. Symbol on a map used to show direction






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