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






2. Relative to another known feature






3. Points taken at regular intervals from the cumulative distribution function (CDF) of a random variable.






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






5. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






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






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






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






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






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






11. Triangulated Irregular Network.






12. Arcs only ___ at Nodes






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






14. Can not be made from other colors






15. Regulary spaced sample of points representing a surface.






16. When parallels & meridians intersect at right angles.






17. Understand spatial relations between landmarks>shortcuts.






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






19. Preserve Direction






20. Description by name: ex London






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






22. 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






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






24. 80 % of all information contain _________






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






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






27. Geographic Coordinate System.






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






29. 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.






30. The ability to link files together.






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






32. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






33. Points - Polygons - Lines






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






35. A tabular file containing rows and columns; descriptive attributes about some object such as a geographic feature are contained in each row






36. 2 ______: 1. Files/records. 2. Database/collection of files.






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






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






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






40. 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.






41. Representative fraction






42. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






43. Accuracy - reliability - responsibility.






44. Contour lines never _______






45. GIS is not a ______






46. Smoothing & Shape abstraction.






47. An assignment of geographic coordinates to locations.






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






49. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






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