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






2. Symbol on a map used to show direction






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






4. Most popular form of USGS Map

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






6. Essentials of DBMS: Each record has a ________






7. Description by name: ex London






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






9. A reference system (geographic coordinates)






10. 2 common _______: 1. Vector. 2. Raster.






11. Maps are restricted to a __________.






12. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






13. Google Maps or Microsoft Bing.






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






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






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






17. Provide information about a particular topic or theme.






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






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






20. Regulary spaced sample of points representing a surface.






21. Smoothing & Shape abstraction.






22. Preserve Shape






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






24. Can not be made from other colors






25. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






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






27. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






28. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






29. Precision of a measurement with respect to time






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






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






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






33. 2 ______: 1. Files/records. 2. Database/collection of files.






34. Triangulated Irregular Network.






35. The ability to link files together.






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






37. Relative to another known feature






38. Geographic Coordinate System.






39. Explanatory list of symbols on a map






40. Contour lines never _______






41. Representative fraction






42. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






43. The 4 elements or ______: 1. Cell Value - each cell carries a value. 2. Cell size - this determines the resolution. 3. Raster bands - Can have single or multiple bands. 4. Spatial Reference - Raster data must have spatial reference.






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






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






46. 80 % of all information contain _________






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






48. Global Positioning System.






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






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