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. Points - Polygons - Lines






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






3. Explanatory list of symbols on a map






4. A reference system (geographic coordinates)






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






6. When distances from the center of the projection to any other place on the map are uniform in all directions.






7. GIS is ________






8. Preserve Shape






9. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






10. The ability to link files together.






11. 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.






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






13. When parallels & meridians intersect at right angles.






14. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






15. To avoid corrupt data!






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






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






18. Digital Elevation Model






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






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






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






22. Are made with GIS






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






24. Representative fraction






25. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






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






27. 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.






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






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






30. 2 common _______: 1. Vector. 2. Raster.






31. Global Positioning System.






32. Relative to another known feature






33. Triangulated Irregular Network.






34. Google Maps or Microsoft Bing.






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






36. Maps are restricted to a __________.






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






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






39. A tabular file containing rows and columns; descriptive attributes about some object such as a geographic feature are contained in each row






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






41. Lines that connect points of equal value.






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






43. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






44. GIS is not a ______






45. Precision of a measurement with respect to time






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






47. The study of place names - origins - history & meanings.






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






49. Provide information about a particular topic or theme.






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