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. 80 % of all information contain _________






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






3. Symbol on a map used to show direction






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






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






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






7. The nature of relationships & connectivity between them.






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






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






10. Explanatory list of symbols on a map






11. 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.






12. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






13. Regulary spaced sample of points representing a surface.






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






15. Triangulated Irregular Network.






16. Relative to another known feature






17. Preserve Direction






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






19. Global Positioning System.






20. A process of mathematical conversion.






21. Smoothing & Shape abstraction.






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






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






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






25. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






26. Essentials of DBMS: Each record has a ________






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






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. Geographic Coordinate System.






31. Digital Elevation Model






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






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






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






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






36. Representative fraction






37. To avoid corrupt data!






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






39. The 5 components of a TIN: NETHT - 1. Nodes 2. Edges 3. Triangles 4. ___ 5. Topology.






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






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






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






43. Accuracy - reliability - responsibility.






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






45. When distances from the center of the projection to any other place on the map are uniform in all directions.






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






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






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






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






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