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 reference system (geographic coordinates)






2. A Complete frame






3. GIS is ________






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






5. Preserve Shape






6. Most popular form of USGS Map

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7. 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






8. Global Positioning System.






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






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






11. When parallels & meridians intersect at right angles.






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






13. Explanatory list of symbols on a map






14. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






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






16. Deliver location / topographic information.






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






18. Representative fraction






19. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






20. The reverse of each other.






21. Can not be made from other colors






22. Points - Polygons - Lines






23. Regulary spaced sample of points representing a surface.






24. Precision of a measurement with respect to time






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






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






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






28. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






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






30. Smoothing & Shape abstraction.






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






32. 80 % of all information contain _________






33. Essentials of DBMS: Each record has a ________






34. Digital Elevation Model






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






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






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






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






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






40. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






41. The ability to link files together.






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






43. The 4 elements or ______: 1. Cell Value - each cell carries a value. 2. Cell size - this determines the resolution. 3. Raster bands - Can have single or multiple bands. 4. Spatial Reference - Raster data must have spatial reference.






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






45. Symbol on a map used to show direction






46. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






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






48. Uses coordinates (X -Y) to represent spatial features. Scale matters involve what Polygons<>points. Polygons<>lines.






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






50. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km