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. Understand spatial relations between landmarks>shortcuts.






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






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






4. 2 ______: 1. Files/records. 2. Database/collection of files.






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






6. The reverse of each other.






7. Global Positioning System.






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






9. Geographic Coordinate System.






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






11. 80 % of all information contain _________






12. GIS is not a ______






13. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






14. The nature of relationships & connectivity between them.






15. 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.






16. 2 common _______: 1. Vector. 2. Raster.






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






18. Can not be made from other colors






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






20. Digital Elevation Model






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






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






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






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






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






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






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






28. 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.






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






30. Deliver location / topographic information.






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






32. Arcs only ___ at Nodes






33. Relative to another known feature






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






35. A reference system (geographic coordinates)






36. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






37. Explanatory list of symbols on a map






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






39. Preserve Shape






40. Lines that connect points of equal value.






41. Google Maps or Microsoft Bing.






42. Preserve Direction






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






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






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






46. Provide information about a particular topic or theme.






47. Description by name: ex London






48. 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






49. 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.






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