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






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






3. GIS is not a ______






4. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






5. Accuracy - reliability - responsibility.






6. Provide information about a particular topic or theme.






7. Connectivity: ___________. 3 elements 1. Nodes & vertices define the shape of the arc. 2. Arcs have a from-node (or starting node) & a to-node (or ending-node). 3. Arcs only join at nodes.






8. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






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






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






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






12. Points - Polygons - Lines






13. Preserve Shape






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






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






16. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






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






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






19. 2 common _______: 1. Vector. 2. Raster.






20. Precision of a measurement with respect to time






21. Smoothing & Shape abstraction.






22. Triangulated Irregular Network.






23. Regulary spaced sample of points representing a surface.






24. 80 % of all information contain _________






25. 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.






26. A Complete frame






27. A reference system (geographic coordinates)






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






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






30. The ability to link files together.






31. An assignment of geographic coordinates to locations.






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






33. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






34. A process of mathematical conversion.






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






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






37. Preserve Direction






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






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






40. Understand spatial relations between landmarks>shortcuts.






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






42. 2 ______: 1. Files/records. 2. Database/collection of files.






43. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






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






45. Assigning location information to text & discourse.






46. To avoid corrupt data!






47. Deliver location / topographic information.






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






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






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