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






2. Provide information about a particular topic or theme.






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






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






5. To avoid corrupt data!






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






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






8. Triangulated Irregular Network.






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






10. GIS is not a ______






11. Arcs only ___ at Nodes






12. 80 % of all information contain _________






13. Regulary spaced sample of points representing a surface.






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






15. Most popular form of USGS Map

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






17. Are made with GIS






18. GIS is ________






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






20. The ability to link files together.






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






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






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






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






25. Can not be made from other colors






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






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






28. 2 ______: 1. Files/records. 2. Database/collection of files.






29. Maps are restricted to a __________.






30. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






31. Fixed entitites - Can only take a specific value (Ex. number of students in a class - anything that is counted and not measured)






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






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






34. Explanatory list of symbols on a map






35. 2 common _______: 1. Vector. 2. Raster.






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






37. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






38. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






39. An assignment of geographic coordinates to locations.






40. LN 1. L - Level Surfaces. 2. N - NAVD88.






41. Description by name: ex London






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






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






44. Blue - Green - Red - NIR....






45. Digital Elevation Model






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. When parallels & meridians intersect at right angles.






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






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






50. 2 reasons why Topology matters: 1. Error detection. 2. ___________.