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






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






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






4. Preserve Direction






5. Preserve Shape






6. Representative fraction






7. 2 common _______: 1. Vector. 2. Raster.






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






9. Essentials of DBMS: Each record has a ________






10. Triangulated Irregular Network.






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






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 Complete frame






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






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






16. 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.






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






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






19. Regulary spaced sample of points representing a surface.






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






21. Relative to another known feature






22. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






23. GIS is not a ______






24. Digital Elevation Model






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






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






27. Sailors and pilots use these maps to navigate






28. Can not be made from other colors






29. Assigning location information to text & discourse.






30. The nature of relationships & connectivity between them.






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






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






33. When areas on a map maintain the same proportional relationship to the areas on the earth that they represent.






34. A process of mathematical conversion.






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






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






37. An assignment of geographic coordinates to locations.






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






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






40. To avoid corrupt data!






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






42. When parallels & meridians intersect at right angles.






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






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






45. 80 % of all information contain _________






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






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






48. Description by name: ex London






49. Points - Polygons - Lines






50. Accuracy - reliability - responsibility.