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






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






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






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






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






6. Understand spatial relations between landmarks>shortcuts.






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






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






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






10. Sailors and pilots use these maps to navigate






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






12. Representative fraction






13. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






14. 2 ______: 1. Files/records. 2. Database/collection of files.






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






16. An assignment of geographic coordinates to locations.






17. The ability to link files together.






18. Global Positioning System.






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






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






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






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






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






24. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






25. Maps are restricted to a __________.






26. Blue - Green - Red - NIR....






27. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






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






29. When parallels & meridians intersect at right angles.






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






31. To avoid corrupt data!






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






33. The study of place names - origins - history & meanings.






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






35. Description by name: ex London






36. Accuracy - reliability - responsibility.






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






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






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






40. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






41. Google Maps or Microsoft Bing.






42. Regulary spaced sample of points representing a surface.






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






44. The reverse of each other.






45. Assigning location information to text & discourse.






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. Essentials of DBMS: Each record has a ________






48. Preserve Shape






49. A Complete frame






50. Explanatory list of symbols on a map