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. Geographic Coordinate System.






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






3. Understand spatial relations between landmarks>shortcuts.






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






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






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






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






8. 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.






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






10. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






11. Maps are restricted to a __________.






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






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






14. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






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






16. Global Positioning System.






17. Precision of a measurement with respect to time






18. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






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






20. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






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






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






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






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






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






26. A tabular file containing rows and columns; descriptive attributes about some object such as a geographic feature are contained in each row






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






28. An assignment of geographic coordinates to locations.






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






30. Explanatory list of symbols on a map






31. GIS is not a ______






32. Regulary spaced sample of points representing a surface.






33. Symbol on a map used to show direction






34. LN 1. L - Level Surfaces. 2. N - NAVD88.






35. Most popular form of USGS Map

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36. GIS is ________






37. Sailors and pilots use these maps to navigate






38. Lines that connect points of equal value.






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






40. Preserve Shape






41. To avoid corrupt data!






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






43. Accuracy - reliability - responsibility.






44. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






45. 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.






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






47. Assigning location information to text & discourse.






48. A process of mathematical conversion.






49. Digital Elevation Model






50. Google Maps or Microsoft Bing.