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






2. Maps are restricted to a __________.






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






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






5. When parallels & meridians intersect at right angles.






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






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






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






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






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






11. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






12. Assigning location information to text & discourse.






13. Relative to another known feature






14. 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.






15. Accuracy - reliability - responsibility.






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






17. Digital Elevation Model






18. Triangulated Irregular Network.






19. 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






20. Deliver location / topographic information.






21. Lines that connect points of equal value.






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






23. A Complete frame






24. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






25. The 5 key concepts in Geography & GIS (LDDSN) 1. Location. 2. _________. 3. Distance. 4. Space. 5. Navigation.






26. The nature of relationships & connectivity between them.






27. Essentials of DBMS: Each record has a ________






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






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






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






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






32. Are made with GIS






33. Symbol on a map used to show direction






34. Representative fraction






35. Google Maps or Microsoft Bing.






36. 3 topological concepts: 1. Connectivity - arcs connect to each other at nodes. 2._______ - arcs that connect to surround an area define a polygon. 3. Contiguity - arcs have direction & left & right sides.






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






38. 2 ______: 1. Files/records. 2. Database/collection of files.






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






40. Preserve Direction






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






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






43. Arcs only ___ at Nodes






44. Precision of a measurement with respect to time






45. Can not be made from other colors






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






47. To avoid corrupt data!






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






49. Understand spatial relations between landmarks>shortcuts.






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







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