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






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






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






4. Blue - Green - Red - NIR....






5. Regulary spaced sample of points representing a surface.






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






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






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






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






10. 80 % of all information contain _________






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






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






13. Smoothing & Shape abstraction.






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






15. The acquisition of data about Earth's surface from a satellite orbiting the planet or other long-distance methods.






16. Points - Polygons - Lines






17. Google Maps or Microsoft Bing.






18. Assigning location information to text & discourse.






19. Global Positioning System.






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






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






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






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






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






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






26. Are made with GIS






27. Shift in delivery (eg - require user interaction).






28. Description by name: ex London






29. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






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






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






32. Preserve Shape






33. Contour lines never _______






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






35. 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.






36. 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.






37. Triangulated Irregular Network.






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






39. An assignment of geographic coordinates to locations.






40. The nature of relationships & connectivity between them.






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






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






43. A process of mathematical conversion.






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






45. 2 common _______: 1. Vector. 2. Raster.






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. The ability to link files together.






48. Precision of a measurement with respect to time






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






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