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






2. An assignment of geographic coordinates to locations.






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






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






5. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






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






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






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






9. Preserve Shape






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






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






12. Are made with GIS






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






14. Digital Elevation Model






15. Understand spatial relations between landmarks>shortcuts.






16. 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.






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






18. Assigning location information to text & discourse.






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






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






21. Essentials of DBMS: Each record has a ________






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






23. Regulary spaced sample of points representing a surface.






24. Relative to another known feature






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






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






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






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






29. Description by name: ex London






30. Can not be made from other colors






31. 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.






32. Accuracy - reliability - responsibility.






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






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






35. 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.






36. Global Positioning System.






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






38. Provide information about a particular topic or theme.






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






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






41. A Complete frame






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






43. GIS is not a ______






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






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






46. Representative fraction






47. GIS is ________






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






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






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