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






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






3. Preserve Direction






4. Global Positioning System.






5. Essentials of DBMS: Each record has a ________






6. When parallels & meridians intersect at right angles.






7. Deliver location / topographic information.






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






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






10. Most popular form of USGS Map

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






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






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






14. Are made with GIS






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






16. The nature of relationships & connectivity between them.






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






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






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






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






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






22. Assigning location information to text & discourse.






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






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






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






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






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






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






29. 2 common _______: 1. Vector. 2. Raster.






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






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






32. 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.






33. 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.






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






35. Precision of a measurement with respect to time






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






37. A process of mathematical conversion.






38. A reference system (geographic coordinates)






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






40. Explanatory list of symbols on a map






41. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






42. 80 % of all information contain _________






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






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






45. An assignment of geographic coordinates to locations.






46. Triangulated Irregular Network.






47. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






48. Representative fraction






49. Accuracy - reliability - responsibility.






50. Contour lines never _______