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






2. 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.






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






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






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






6. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






7. Geographic Coordinate System.






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






9. 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.






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






11. Most popular form of USGS Map

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12. A 3-D frame of reference (model of the earth) used to determine surface locations.






13. Preserve Direction






14. Deliver location / topographic information.






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






16. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






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






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






19. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






20. A Complete frame






21. 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.






22. GIS is ________






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






24. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






25. Global Positioning System.






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






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






28. Sailors and pilots use these maps to navigate






29. Symbol on a map used to show direction






30. Relative to another known feature






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






32. A process of mathematical conversion.






33. Triangulated Irregular Network.






34. Arcs only ___ at Nodes






35. Essentials of DBMS: Each record has a ________






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






37. Assigning location information to text & discourse.






38. The nature of relationships & connectivity between them.






39. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






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






41. The ability to link files together.






42. Maps are restricted to a __________.






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






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






45. Digital Elevation Model






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






47. Description by name: ex London






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






49. 2 common _______: 1. Vector. 2. Raster.






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