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






2. Assigning location information to text & discourse.






3. GIS is ________






4. Maps are restricted to a __________.






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






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






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






8. Lines that connect points of equal value.






9. 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.






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






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






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






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






14. Arcs only ___ at Nodes






15. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






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






17. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






18. Digital Elevation Model






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






20. Are made with GIS






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






22. Maps that show the absolute location of places and geographic features determined by a frame of reference - typically latitude and longitude






23. Preserve Direction






24. An assignment of geographic coordinates to locations.






25. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






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






27. The acquisition of data about Earth's surface from a satellite orbiting the planet or other long-distance methods.






28. Representative fraction






29. Sailors and pilots use these maps to navigate






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






31. Explanatory list of symbols on a map






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






33. Relative to another known feature






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






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






36. 80 % of all information contain _________






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






38. 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.






39. Deliver location / topographic information.






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






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






42. When parallels & meridians intersect at right angles.






43. Precision of a measurement with respect to time






44. Essentials of DBMS: Each record has a ________






45. Symbol on a map used to show direction






46. 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






47. 2 common _______: 1. Vector. 2. Raster.






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






49. Accuracy - reliability - responsibility.






50. The nature of relationships & connectivity between them.