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. Provide information about a particular topic or theme.






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






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






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






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






6. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






7. Blue - Green - Red - NIR....






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






9. Points - Polygons - Lines






10. Contour lines never _______






11. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






12. 2 common _______: 1. Vector. 2. Raster.






13. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






14. A process of mathematical conversion.






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






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






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






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






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






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






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






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






23. Most popular form of USGS Map

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






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






26. Are made with GIS






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






28. Explanatory list of symbols on a map






29. Triangulated Irregular Network.






30. Relative to another known feature






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






32. The ability to link files together.






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






34. A reference system (geographic coordinates)






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






36. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






37. An assignment of geographic coordinates to locations.






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






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






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






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






42. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






43. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






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






45. Description by name: ex London






46. Regulary spaced sample of points representing a surface.






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






49. 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






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







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