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. Relative to another known feature






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






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






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






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






6. Can not be made from other colors






7. A process of mathematical conversion.






8. Geographic Coordinate System.






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






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






11. 2 ______: 1. Files/records. 2. Database/collection of files.






12. Precision of a measurement with respect to time






13. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






14. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






15. Contour lines never _______






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






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






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






19. Regulary spaced sample of points representing a surface.






20. Maps are restricted to a __________.






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






22. Assigning location information to text & discourse.






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






24. The reverse of each other.






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






26. Most popular form of USGS Map

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27. Explanatory list of symbols on a map






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






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






30. 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.






31. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






32. A Complete frame






33. GIS is not a ______






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






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






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






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






38. Digital Elevation Model






39. To avoid corrupt data!






40. Accuracy - reliability - responsibility.






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






42. 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.






43. 2 common _______: 1. Vector. 2. Raster.






44. The range of wavelengths sampled by a remote sensor.






45. The study of place names - origins - history & meanings.






46. Provide information about a particular topic or theme.






47. Global Positioning System.






48. Representative fraction






49. Description by name: ex London






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







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