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






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






3. The 5 key concepts in Geography & GIS (LDDSN) 1. Location. 2. _________. 3. Distance. 4. Space. 5. Navigation.






4. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






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






6. Geographic Coordinate System.






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






8. Google Maps or Microsoft Bing.






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






10. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






11. Can assume all values between any two specific values. They are obtained by measuring.






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






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






14. Digital Elevation Model






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






16. A process of mathematical conversion.






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






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






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






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






21. 2 ______: 1. Files/records. 2. Database/collection of files.






22. Precision of a measurement with respect to time






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






24. Regulary spaced sample of points representing a surface.






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






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






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






28. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






29. Symbol on a map used to show direction






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






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






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






33. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






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






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






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






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






38. Representative fraction






39. Triangulated Irregular Network.






40. Arcs only ___ at Nodes






41. Can not be made from other colors






42. Preserve Shape






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






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






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






46. Contour lines never _______






47. Maps that show the absolute location of places and geographic features determined by a frame of reference - typically latitude and longitude






48. Preserve Direction






49. A Complete frame






50. 80 % of all information contain _________







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