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






2. The nature of relationships & connectivity between them.






3. Maps are restricted to a __________.






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






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






6. Identify unique points - patterns or features in space.






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






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






9. A line segment between 2 nodes -1 of which is a start node & the other an end node.






10. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






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






12. Accuracy - reliability - responsibility.






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






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






15. Description by name: ex London






16. Relative to another known feature






17. Arcs only ___ at Nodes






18. A process of mathematical conversion.






19. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






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






21. Assigning location information to text & discourse.






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






23. A Complete frame






24. Digital Elevation Model






25. Explanatory list of symbols on a map






26. GIS is not a ______






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






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






29. Symbol on a map used to show direction






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






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






32. A reference system (geographic coordinates)






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






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






35. Google Maps or Microsoft Bing.






36. Deliver location / topographic information.






37. Global Positioning System.






38. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






39. 80 % of all information contain _________






40. The ability to link files together.






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






42. Representative fraction






43. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






44. Preserve Shape






45. An assignment of geographic coordinates to locations.






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






47. Sailors and pilots use these maps to navigate






48. Regulary spaced sample of points representing a surface.






49. 2 ______: 1. Files/records. 2. Database/collection of files.






50. 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.







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