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






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






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






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






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






6. 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.






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






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






9. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






10. When areas on a map maintain the same proportional relationship to the areas on the earth that they represent.






11. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






12. Google Maps or Microsoft Bing.






13. Area of the Earth that is displayed in each image






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






15. Global Positioning System.






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






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






18. Precision of a measurement with respect to time






19. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






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






21. The ability to link files together.






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






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






24. 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






25. The reverse of each other.






26. When parallels & meridians intersect at right angles.






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






28. Maps are restricted to a __________.






29. Relative to another known feature






30. 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.






31. Representative fraction






32. A Complete frame






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






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






35. Preserve Shape






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






37. Geographic Coordinate System.






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






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






40. Digital Elevation Model






41. Can not be made from other colors






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






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






44. Arcs only ___ at Nodes






45. Preserve Direction






46. 2 ______: 1. Files/records. 2. Database/collection of files.






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






48. Are made with GIS






49. Assigning location information to text & discourse.






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