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. Most popular form of USGS Map

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2. Blue - Green - Red - NIR....






3. A reference system (geographic coordinates)






4. Deliver location / topographic information.






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






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






7. A process of mathematical conversion.






8. Points - Polygons - Lines






9. Essentials of DBMS: Each record has a ________






10. Smoothing & Shape abstraction.






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






12. Contour lines never _______






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






14. GIS is ________ - spatial analysis & dependent on the computer.






15. Are made with GIS






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






17. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






18. 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






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






20. 2 ______: 1. Files/records. 2. Database/collection of files.






21. To avoid corrupt data!






22. Understand spatial relations between landmarks>shortcuts.






23. Explanatory list of symbols on a map






24. 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.






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






26. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






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






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






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






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






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






32. Description by name: ex London






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






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






35. 2 common _______: 1. Vector. 2. Raster.






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






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






38. 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.






39. When parallels & meridians intersect at right angles.






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






41. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






42. Accuracy - reliability - responsibility.






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






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






45. Preserve Direction






46. HAL - H-Human nature. A-Arbitrary/socially constructed. L-Loss of info (hiding variance within a class or group).






47. Relative to another known feature






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






49. Triangulated Irregular Network.






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