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. Preserve Direction






2. Explanatory list of symbols on a map






3. To avoid corrupt data!






4. Deliver location / topographic information.






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






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






7. When parallels & meridians intersect at right angles.






8. 2 common _______: 1. Vector. 2. Raster.






9. 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.






10. People creating their own maps - on their own terms by combining elements of an existing toolset.






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






12. Description by name: ex London






13. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






14. The reverse of each other.






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






16. Can not be made from other colors






17. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






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






19. 80 % of all information contain _________






20. Precision of a measurement with respect to time






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






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






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






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






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






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






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






28. Symbol on a map used to show direction






29. Provide information about a particular topic or theme.






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






31. Defined by NOIR NOIR N-Nominal - qualitive data. O-Ordinal - order or ranking. I-Interval - numeric scale - arbitrary units. R - Ratio - fixed origin - continuous scale.






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






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






34. The ability to link files together.






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






36. Relative to another known feature






37. Triangulated Irregular Network.






38. Regulary spaced sample of points representing a surface.






39. A reference system (geographic coordinates)






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






41. Geographic Coordinate System.






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






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






44. 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.






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






46. 2 ______: 1. Files/records. 2. Database/collection of files.






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






48. Essentials of DBMS: Each record has a ________






49. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






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