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. 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






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






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






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






5. Most popular form of USGS Map

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6. Lines that connect points of equal value.






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






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






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






10. Understand spatial relations between landmarks>shortcuts.






11. Classes based on natural groupings through examination of histogram (good: minimizes differences bad: data range uneven)






12. Provide information about a particular topic or theme.






13. Geographic Coordinate System.






14. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






15. Preserve Direction






16. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






17. Arcs only ___ at Nodes






18. Maps are restricted to a __________.






19. The reverse of each other.






20. Explanatory list of symbols on a map






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






22. Points - Polygons - Lines






23. Smoothing & Shape abstraction.






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






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






26. 2 ______: 1. Files/records. 2. Database/collection of files.






27. Contour lines never _______






28. Digital Elevation Model






29. Global Positioning System.






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






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






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






33. GIS is not a ______






34. Can not be made from other colors






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






36. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






37. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






38. 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.






39. Preserve Shape






40. To avoid corrupt data!






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






42. 2 common _______: 1. Vector. 2. Raster.






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






44. An assignment of geographic coordinates to locations.






45. 80 % of all information contain _________






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






47. 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.






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






49. A reference system (geographic coordinates)






50. 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.