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. Preserve Shape






2. GIS is ________






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






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






5. Description by name: ex London






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






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






8. Essentials of DBMS: Each record has a ________






9. Symbol on a map used to show direction






10. Relative to another known feature






11. Contour lines never _______






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






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






14. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






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






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






17. Assigning location information to text & discourse.






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






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






20. The ability to link files together.






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






22. Sailors and pilots use these maps to navigate






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






24. A process of mathematical conversion.






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






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






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






28. The nature of relationships & connectivity between them.






29. Regulary spaced sample of points representing a surface.






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






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






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






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






34. 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






35. When parallels & meridians intersect at right angles.






36. Preserve Direction






37. A Complete frame






38. Blue - Green - Red - NIR....






39. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






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






41. Maps are restricted to a __________.






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






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






44. Points - Polygons - Lines






45. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






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






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






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






49. Global Positioning System.






50. To avoid corrupt data!