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






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






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






4. 2 common _______: 1. Vector. 2. Raster.






5. Essentials of DBMS: Each record has a ________






6. Triangulated Irregular Network.






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






8. Preserve Shape






9. The nature of relationships & connectivity between them.






10. 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






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






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






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






14. Symbol on a map used to show direction






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






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






17. Sailors and pilots use these maps to navigate






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






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






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






21. 80 % of all information contain _________






22. Blue - Green - Red - NIR....






23. Accuracy - reliability - responsibility.






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






25. Maps are restricted to a __________.






26. Application Programming Interfaces (increases access like my maps on google).






27. Can not be made from other colors






28. Representative fraction






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






30. Google Maps or Microsoft Bing.






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






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






33. 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.






34. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






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






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






37. To avoid corrupt data!






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






39. Understand spatial relations between landmarks>shortcuts.






40. Deliver location / topographic information.






41. Regulary spaced sample of points representing a surface.






42. Global Positioning System.






43. Geographic Coordinate System.






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






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






46. A reference system (geographic coordinates)






47. Lines that connect points of equal value.






48. GIS is ________






49. 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.






50. Relative to another known feature