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






2. Description by name: ex London






3. When parallels & meridians intersect at right angles.






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






5. Files in the DB can be linked or joined using the _______






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






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






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






9. Google Maps or Microsoft Bing.






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






11. The ability to link files together.






12. Deliver location / topographic information.






13. 2 common _______: 1. Vector. 2. Raster.






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






15. A reference system (geographic coordinates)






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






17. Smoothing & Shape abstraction.






18. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






19. Lines that connect points of equal value.






20. Explanatory list of symbols on a map






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






22. Provide information about a particular topic or theme.






23. 2 ______: 1. Files/records. 2. Database/collection of files.






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






25. Maps are restricted to a __________.






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






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






28. Preserve Shape






29. 3 topological concepts: 1. Connectivity - arcs connect to each other at nodes. 2._______ - arcs that connect to surround an area define a polygon. 3. Contiguity - arcs have direction & left & right sides.






30. Are made with GIS






31. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






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






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






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






35. 80 % of all information contain _________






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






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






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






39. Symbol on a map used to show direction






40. Sailors and pilots use these maps to navigate






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






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






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






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






45. Essentials of DBMS: Each record has a ________






46. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






47. GIS is not a ______






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






49. The nature of relationships & connectivity between them.






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