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. Understand spatial relations between landmarks>shortcuts.






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






3. Most popular form of USGS Map

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






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






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






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






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






9. Accuracy - reliability - responsibility.






10. A reference system (geographic coordinates)






11. Connect & travel between landmarks by moving thru space.






12. Precision of a measurement with respect to time






13. Essentials of DBMS: Each record has a ________






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






15. 80 % of all information contain _________






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






17. Global Positioning System.






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






19. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






20. Smoothing & Shape abstraction.






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






22. To avoid corrupt data!






23. GIS is ________






24. The reverse of each other.






25. When parallels & meridians intersect at right angles.






26. Geographic Coordinate System.






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






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. Relative to another known feature






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






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






32. A process of mathematical conversion.






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






34. Symbol on a map used to show direction






35. Points - Polygons - Lines






36. 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.






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






38. GIS is not a ______






39. Explanatory list of symbols on a map






40. Representative fraction






41. Arcs only ___ at Nodes






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






43. Triangulated Irregular Network.






44. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






45. 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.






46. Digital Elevation Model






47. Maps are restricted to a __________.






48. Blue - Green - Red - NIR....






49. Description by name: ex London






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