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. 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.






2. Arcs only ___ at Nodes






3. Lines that connect points of equal value.






4. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






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






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






7. Description by name: ex London






8. The nature of relationships & connectivity between them.






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






10. A Complete frame






11. Blue - Green - Red - NIR....






12. The reverse of each other.






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






14. 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.






15. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






16. Accuracy - reliability - responsibility.






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






18. Symbol on a map used to show direction






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






20. Geographic Coordinate System.






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






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






23. A process of mathematical conversion.






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






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






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






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






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






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






30. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






31. Preserve Direction






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






33. Can not be made from other colors






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






36. 2 ______: 1. Files/records. 2. Database/collection of files.






37. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






38. Digital Elevation Model






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






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






41. Essentials of DBMS: Each record has a ________






42. Most popular form of USGS Map






43. Precision of a measurement with respect to time






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






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






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






47. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






48. Global Positioning System.






49. Smoothing & Shape abstraction.






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