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






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






3. Application Programming Interfaces (increases access like my maps on google).






4. Accuracy - reliability - responsibility.






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






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






7. Global Positioning System.






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






9. Maps are restricted to a __________.






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






11. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






12. Preserve Direction






13. A Complete frame






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






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






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






17. A data classification method that divides a set of attribute values into groups that contain an equal range of values






18. Contour lines never _______






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






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






21. 2 ______: 1. Files/records. 2. Database/collection of files.






22. Representative fraction






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






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






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






26. A process of mathematical conversion.






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






28. Points - Polygons - Lines






29. Regulary spaced sample of points representing a surface.






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






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






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






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






34. Geographic Coordinate System.






35. Are made with GIS






36. 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.






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






38. Most popular form of USGS Map

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39. Provide information about a particular topic or theme.






40. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






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






42. Precision of a measurement with respect to time






43. GIS is not a ______






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






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






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






47. Preserve Shape






48. 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.






49. When parallels & meridians intersect at right angles.






50. The nature of relationships & connectivity between them.