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






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






3. Understand spatial relations between landmarks>shortcuts.






4. The ability to link files together.






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






6. An assignment of geographic coordinates to locations.






7. To avoid corrupt data!






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






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






10. 80 % of all information contain _________






11. Most popular form of USGS Map

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






13. Area of the Earth that is displayed in each image






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






15. The reverse of each other.






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






17. Are made with GIS






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






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






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






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






22. Explanatory list of symbols on a map






23. The nature of relationships & connectivity between them.






24. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






25. Preserve Shape






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






27. Regulary spaced sample of points representing a surface.






28. Assigning location information to text & discourse.






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






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






31. Points - Polygons - Lines






32. A process of mathematical conversion.






33. Description by name: ex London






34. A Complete frame






35. Relative to another known feature






36. Can not be made from other colors






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






38. GIS is ________






39. 2 common _______: 1. Vector. 2. Raster.






40. Deliver location / topographic information.






41. Geographic Coordinate System.






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






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






44. Lines that connect points of equal value.






45. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






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






47. 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.






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






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






50. Precision of a measurement with respect to time







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