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. Points - Polygons - Lines






2. Digital Elevation Model






3. The reverse of each other.






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






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






6. An assignment of geographic coordinates to locations.






7. Sailors and pilots use these maps to navigate






8. Geographic Coordinate System.






9. GIS is not a ______






10. Deliver location / topographic information.






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






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






13. A Complete frame






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






15. Maps are restricted to a __________.






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






17. Triangulated Irregular Network.






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






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






20. Can not be made from other colors






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






22. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






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






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






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






26. Preserve Direction






27. Lines that connect points of equal value.






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






29. Google Maps or Microsoft Bing.






30. Description by name: ex London






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






32. Smoothing & Shape abstraction.






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






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






35. Are made with GIS






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






37. Arcs only ___ at Nodes






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






39. Precision of a measurement with respect to time






40. 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.






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






42. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






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






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






45. Symbol on a map used to show direction






46. 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






47. Explanatory list of symbols on a map






48. Most popular form of USGS Map

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






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