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. Connect & travel between landmarks by moving thru space.






2. A reference system (geographic coordinates)






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






4. Explanatory list of symbols on a map






5. 2 ______: 1. Files/records. 2. Database/collection of files.






6. Contour lines never _______






7. Are made with GIS






8. Deliver location / topographic information.






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






10. 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






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






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






13. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






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






15. 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.






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






17. To avoid corrupt data!






18. Regulary spaced sample of points representing a surface.






19. Assigning location information to text & discourse.






20. Preserve Direction






21. The reverse of each other.






22. Representative fraction






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






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






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






26. Relative to another known feature






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






28. Description by name: ex London






29. Lines that connect points of equal value.






30. The acquisition of data about Earth's surface from a satellite orbiting the planet or other long-distance methods.






31. Points - Polygons - Lines






32. A Complete frame






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






34. 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.






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






36. GIS is not a ______






37. 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.






38. Smoothing & Shape abstraction.






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






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






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






42. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






43. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






44. Arcs only ___ at Nodes






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






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






47. 2 common _______: 1. Vector. 2. Raster.






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






49. 80 % of all information contain _________






50. GIS is ________ - spatial analysis & dependent on the computer.







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