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. Most popular form of USGS Map

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






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






4. Global Positioning System.






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






6. An assignment of geographic coordinates to locations.






7. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






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






9. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






10. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






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






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






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






14. Files in the DB can be linked or joined using the _______






15. GIS is not a ______






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






17. The ability to link files together.






18. Understand spatial relations between landmarks>shortcuts.






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






20. Representative fraction






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






22. Precision of a measurement with respect to time






23. 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.






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






25. Lines that connect points of equal value.






26. Maps are restricted to a __________.






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






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






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






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






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






32. Essentials of DBMS: Each record has a ________






33. The reverse of each other.






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






35. A map containing information on only one topic or theme.






36. To avoid corrupt data!






37. Sailors and pilots use these maps to navigate






38. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






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






40. Regulary spaced sample of points representing a surface.






41. Blue - Green - Red - NIR....






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






43. 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.






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






45. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






46. 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






47. Assigning location information to text & discourse.






48. A reference system (geographic coordinates)






49. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






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