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. Relative to another known feature






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






3. A reference system (geographic coordinates)






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






5. Explanatory list of symbols on a map






6. Arcs only ___ at Nodes






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






8. The ability to link files together.






9. To avoid corrupt data!






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






11. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






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






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






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






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






16. Essentials of DBMS: Each record has a ________






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






18. Triangulated Irregular Network.






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






20. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






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






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






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






24. GIS is ________






25. 80 % of all information contain _________






26. 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






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






28. The reverse of each other.






29. Understand spatial relations between landmarks>shortcuts.






30. A process of mathematical conversion.






31. Accuracy - reliability - responsibility.






32. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






33. The nature of relationships & connectivity between them.






34. Sailors and pilots use these maps to navigate






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






36. Precision of a measurement with respect to time






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






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






39. GIS is not a ______






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






41. 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.






42. LN 1. L - Level Surfaces. 2. N - NAVD88.






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






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






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






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






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






48. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






49. Preserve Shape






50. Global Positioning System.