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. Lines that connect points of equal value.






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






3. Description by name: ex London






4. Google Maps or Microsoft Bing.






5. 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.






6. 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.






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






8. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






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






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






11. Essentials of DBMS: Each record has a ________






12. Contour lines never _______






13. A tabular file containing rows and columns; descriptive attributes about some object such as a geographic feature are contained in each row






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






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






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






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






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






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






20. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






21. An assignment of geographic coordinates to locations.






22. The nature of relationships & connectivity between them.






23. 3 topological concepts: 1. Connectivity - arcs connect to each other at nodes. 2._______ - arcs that connect to surround an area define a polygon. 3. Contiguity - arcs have direction & left & right sides.






24. A process of mathematical conversion.






25. The ability to link files together.






26. Assigning location information to text & discourse.






27. Preserve Shape






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






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






30. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






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






32. GIS is ________






33. A Complete frame






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






35. 2 ______: 1. Files/records. 2. Database/collection of files.






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






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






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






39. Most popular form of USGS Map






40. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






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






42. 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.






43. 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






44. Symbol on a map used to show direction






45. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






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






47. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






48. Preserve Direction






49. Provide information about a particular topic or theme.






50. A reference system (geographic coordinates)