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






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






3. GIS is ________






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






5. Are made with GIS






6. Arcs only ___ at Nodes






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






8. When parallels & meridians intersect at right angles.






9. Deliver location / topographic information.






10. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






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






12. Lines that connect points of equal value.






13. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






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






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






16. Symbol on a map used to show direction






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






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






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






20. 2 ______: 1. Files/records. 2. Database/collection of files.






21. Townships were six miles square - and were subdivided into 36 sections - each section consisting of one square mile. One section of each township was set aside to support public education - and the remaining sections were to be sold at public auction






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






23. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






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






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






26. Points - Polygons - Lines






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






28. A Complete frame






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






30. 2 common _______: 1. Vector. 2. Raster.






31. The nature of relationships & connectivity between them.






32. Can not be made from other colors






33. Converts what entities into objects in the computer 1. Geometry (points - lines - polygons). 2. Measurement of attributes. 3. Accuracy &/or error.






34. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






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






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






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






38. _________ of the Real World: (S&E - S&S - G&A) 1. Selection & Elimination. 2. Simplification & Smoothing. 3. Generalization & Aggregation.






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






40. 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.






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






42. Digital Elevation Model






43. 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.






44. Description by name: ex London






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






46. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






47. Accuracy - reliability - responsibility.






48. Sailors and pilots use these maps to navigate






49. Google Maps or Microsoft Bing.






50. Geographic Coordinate System.