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 3-D frame of reference (model of the earth) used to determine surface locations.






2. Assigning location information to text & discourse.






3. Global Positioning System.






4. Provide information about a particular topic or theme.






5. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






6. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






7. Connectivity: ___________. 3 elements 1. Nodes & vertices define the shape of the arc. 2. Arcs have a from-node (or starting node) & a to-node (or ending-node). 3. Arcs only join at nodes.






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






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






10. Understand spatial relations between landmarks>shortcuts.






11. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






12. Geographic Coordinate System.






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






14. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






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






16. Can not be made from other colors






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






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






19. Title - legend or key - grid system - distance scale - direction and compass rose






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






21. Points - Polygons - Lines






22. Sailors and pilots use these maps to navigate






23. Accuracy - reliability - responsibility.






24. Google Maps or Microsoft Bing.






25. A reference system (geographic coordinates)






26. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






27. When parallels & meridians intersect at right angles.






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






29. Blue - Green - Red - NIR....






30. Regulary spaced sample of points representing a surface.






31. Explanatory list of symbols on a map






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






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






34. A Complete frame






35. Representative fraction






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






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






38. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






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






40. 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






41. GIS is not a ______






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






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






44. Essentials of DBMS: Each record has a ________






45. 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.






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






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






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






49. Lines that connect points of equal value.






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