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






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






3. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






4. 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.






5. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






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






7. The nature of relationships & connectivity between them.






8. To avoid corrupt data!






9. Description by name: ex London






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






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






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






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






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






15. Area of the Earth that is displayed in each image






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






17. Sailors and pilots use these maps to navigate






18. Triangulated Irregular Network.






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






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






21. Explanatory list of symbols on a map






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






23. GIS is not a ______






24. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






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






26. Preserve Direction






27. 2 common _______: 1. Vector. 2. Raster.






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






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






30. Representative fraction






31. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






32. 80 % of all information contain _________






33. 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






34. A reference system (geographic coordinates)






35. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






36. Are made with GIS






37. Accuracy - reliability - responsibility.






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






39. Maps are restricted to a __________.






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






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






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






43. Understand spatial relations between landmarks>shortcuts.






44. Digital Elevation Model






45. 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.






46. When parallels & meridians intersect at right angles.






47. GIS is ________






48. Relative to another known feature






49. Symbol on a map used to show direction






50. A Complete frame