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






2. The ability to link files together.






3. Deliver location / topographic information.






4. Are made with GIS






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






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






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






8. Blue - Green - Red - NIR....






9. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






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






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






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






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






14. Relative to another known feature






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






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






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






18. A process of mathematical conversion.






19. Google Maps or Microsoft Bing.






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






21. Essentials of DBMS: Each record has a ________






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






23. GIS is not a ______






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






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






26. Lines that connect points of equal value.






27. 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.






28. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






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






31. Description by name: ex London






32. Global Positioning System.






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






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






35. Most popular form of USGS Map

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36. Preserve Shape






37. Triangulated Irregular Network.






38. Points - Polygons - Lines






39. Preserve Direction






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






41. 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.






42. GIS is ________






43. Symbol on a map used to show direction






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






45. Accuracy - reliability - responsibility.






46. Maps are restricted to a __________.






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






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






49. Provide information about a particular topic or theme.






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