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. Description by name: ex London






2. Deliver location / topographic information.






3. Smoothing & Shape abstraction.






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






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






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






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






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






9. Can not be made from other colors






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






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






12. The 5 key concepts in Geography & GIS (LDDSN) 1. Location. 2. _________. 3. Distance. 4. Space. 5. Navigation.






13. Uses coordinates (X -Y) to represent spatial features. Scale matters involve what Polygons<>points. Polygons<>lines.






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






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






16. Provide information about a particular topic or theme.






17. 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.






18. 2 common _______: 1. Vector. 2. Raster.






19. Assigning location information to text & discourse.






20. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






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






22. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






23. 80 % of all information contain _________






24. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






25. Arcs only ___ at Nodes






26. Digital Elevation Model






27. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






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






29. Regulary spaced sample of points representing a surface.






30. Maps are restricted to a __________.






31. GIS is ________






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






33. 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.






34. Understand spatial relations between landmarks>shortcuts.






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






36. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






37. Preserve Shape






38. A Complete frame






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






40. Sailors and pilots use these maps to navigate






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






42. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






43. Preserve Direction






44. Explanatory list of symbols on a map






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






46. Relative to another known feature






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






48. Are made with GIS






49. A data classification method that divides a set of attribute values into groups that contain an equal range of values






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






Can you answer 50 questions in 15 minutes?



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