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. Can not be made from other colors






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






3. Smoothing & Shape abstraction.






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






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






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






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






8. Sailors and pilots use these maps to navigate






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






10. Google Maps or Microsoft Bing.






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






12. 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.






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






14. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






15. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






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






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






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






19. 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.






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






21. Assigning location information to text & discourse.






22. Preserve Shape






23. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






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






25. A Complete frame






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






27. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






28. 2 ______: 1. Files/records. 2. Database/collection of files.






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






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






31. Arcs only ___ at Nodes






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






33. Accuracy - reliability - responsibility.






34. Digital Elevation Model






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






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






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






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






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






40. Connect & travel between landmarks by moving thru space.






41. Lines that connect points of equal value.






42. When parallels & meridians intersect at right angles.






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






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






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






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






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






48. The nature of relationships & connectivity between them.






49. 2 common _______: 1. Vector. 2. Raster.






50. Geographic Coordinate System.