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. Geographic Coordinate System.






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






3. Triangulated Irregular Network.






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






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






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






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






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






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






10. Most popular form of USGS Map


11. A reference system (geographic coordinates)






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






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






14. To avoid corrupt data!






15. Can not be made from other colors






16. A Complete frame






17. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






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






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






20. 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.






21. Description by name: ex London






22. Provide information about a particular topic or theme.






23. Can assume all values between any two specific values. They are obtained by measuring.






24. Digital Elevation Model






25. 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.






26. Global Positioning System.






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






28. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






29. 2 common _______: 1. Vector. 2. Raster.






30. Accuracy - reliability - responsibility.






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






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






33. Explanatory list of symbols on a map






34. 80 % of all information contain _________






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






36. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






37. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






38. Maps are restricted to a __________.






39. The range of wavelengths sampled by a remote sensor.






40. GIS is ________






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






42. When parallels & meridians intersect at right angles.






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






44. Google Maps or Microsoft Bing.






45. LN 1. L - Level Surfaces. 2. N - NAVD88.






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






47. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






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






49. Arcs only ___ at Nodes






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