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






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






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






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






5. Contour lines never _______






6. Lines that connect points of equal value.






7. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






8. 2 common _______: 1. Vector. 2. Raster.






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






10. Accuracy - reliability - responsibility.






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






12. Preserve Shape






13. Triangulated Irregular Network.






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






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






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






17. 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.






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






19. GIS is ________






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






21. Blue - Green - Red - NIR....






22. A Complete frame






23. Symbol on a map used to show direction






24. Digital Elevation Model






25. 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






26. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






27. Maps that show the absolute location of places and geographic features determined by a frame of reference - typically latitude and longitude






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






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






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






31. 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.






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






33. An assignment of geographic coordinates to locations.






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






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






36. Understand spatial relations between landmarks>shortcuts.






37. Essentials of DBMS: Each record has a ________






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






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






40. Most popular form of USGS Map

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41. Sailors and pilots use these maps to navigate






42. Precision of a measurement with respect to time






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






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






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






46. Smoothing & Shape abstraction.






47. To avoid corrupt data!






48. 2 ______: 1. Files/records. 2. Database/collection of files.






49. Arcs only ___ at Nodes






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