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






2. Deliver location / topographic information.






3. Geographic Coordinate System.






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






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






6. GIS is ________






7. The ability to link files together.






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






9. Converts what entities into objects in the computer 1. Geometry (points - lines - polygons). 2. Measurement of attributes. 3. Accuracy &/or error.






10. Google Maps or Microsoft Bing.






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






12. Essentials of DBMS: Each record has a ________






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






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






15. To avoid corrupt data!






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






17. Preserve Direction






18. Regulary spaced sample of points representing a surface.






19. Provide information about a particular topic or theme.






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






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






22. Relative to another known feature






23. 80 % of all information contain _________






24. Representative fraction






25. Global Positioning System.






26. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






27. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






28. Smoothing & Shape abstraction.






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






30. A Complete frame






31. The reverse of each other.






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






33. Assigning location information to text & discourse.






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






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






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






37. Blue - Green - Red - NIR....






38. Explanatory list of symbols on a map






39. Arcs only ___ at Nodes






40. Maps are restricted to a __________.






41. Precision of a measurement with respect to time






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






44. 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.






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






46. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






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






48. Preserve Shape






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






50. The nature of relationships & connectivity between them.