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. Description by name: ex London






2. Most popular form of USGS Map

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






4. Preserve Direction






5. Accuracy - reliability - responsibility.






6. Provide information about a particular topic or theme.






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






8. Points - Polygons - Lines






9. A reference system (geographic coordinates)






10. Global Positioning System.






11. GIS is not a ______






12. 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.






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






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






15. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






16. Essentials of DBMS: Each record has a ________






17. The ability to link files together.






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






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






20. 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.






21. An assignment of geographic coordinates to locations.






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






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






25. Regulary spaced sample of points representing a surface.






26. GIS is ________






27. Assigning location information to text & discourse.






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






29. Blue - Green - Red - NIR....






30. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






31. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






32. Understand spatial relations between landmarks>shortcuts.






33. Lines that connect points of equal value.






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






35. A Complete frame






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






37. Representative fraction






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






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






40. A process of mathematical conversion.






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






42. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






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






44. Relative to another known feature






45. Contour lines never _______






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






47. Preserve Shape






48. The nature of relationships & connectivity between them.






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






50. Geographic Coordinate System.