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






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






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






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






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






6. Triangulated Irregular Network.






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






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






9. 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






10. To avoid corrupt data!






11. A process of mathematical conversion.






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






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






14. Provide information about a particular topic or theme.






15. Digital Elevation Model






16. Regulary spaced sample of points representing a surface.






17. Essentials of DBMS: Each record has a ________






18. Sailors and pilots use these maps to navigate






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






20. GIS is ________






21. Are made with GIS






22. Representative fraction






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






24. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






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






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






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






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






29. Can not be made from other colors






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






31. Preserve Direction






32. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






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






34. Symbol on a map used to show direction






35. Accuracy - reliability - responsibility.






36. 2 common _______: 1. Vector. 2. Raster.






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






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






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






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






41. Global Positioning System.






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






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






44. Real Things (trees - forests - cities etc).






45. 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.






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






47. GIS is not a ______






48. Points - Polygons - Lines






49. 80 % of all information contain _________






50. A Complete frame







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