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. Global Positioning System.






2. The nature of relationships & connectivity between them.






3. Precision of a measurement with respect to time






4. 80 % of all information contain _________






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






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






7. Converts what entities into objects in the computer 1. Geometry (points - lines - polygons). 2. Measurement of attributes. 3. Accuracy &/or error.






8. 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.






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






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






11. The study of place names - origins - history & meanings.






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






13. Digital Elevation Model






14. Description by name: ex London






15. To avoid corrupt data!






16. Most popular form of USGS Map

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






18. The ability to link files together.






19. A reference system (geographic coordinates)






20. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






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






22. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






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






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






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






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






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






28. Preserve Shape






29. Points taken at regular intervals from the cumulative distribution function (CDF) of a random variable.






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






31. 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.






32. GIS is ________






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






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






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






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






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






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






39. Smoothing & Shape abstraction.






40. Maps are restricted to a __________.






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






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






43. An assignment of geographic coordinates to locations.






44. Geographic Coordinate System.






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






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






47. A Complete frame






48. When parallels & meridians intersect at right angles.






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. Area of the Earth that is displayed in each image