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






2. GIS is ________






3. Provide information about a particular topic or theme.






4. Representative fraction






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






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






7. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






8. Geographic Coordinate System.






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






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






11. The 5 key concepts in Geography & GIS (LDDSN) 1. Location. 2. _________. 3. Distance. 4. Space. 5. Navigation.






12. To avoid corrupt data!






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






14. The ability to link files together.






15. The reverse of each other.






16. Understand spatial relations between landmarks>shortcuts.






17. Are made with GIS






18. Triangulated Irregular Network.






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






20. 2 common _______: 1. Vector. 2. Raster.






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






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






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






24. When parallels & meridians intersect at right angles.






25. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






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






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






28. Blue - Green - Red - NIR....






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






30. Smoothing & Shape abstraction.






31. Regulary spaced sample of points representing a surface.






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






33. Relative to another known feature






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






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






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






37. Assigning location information to text & discourse.






38. 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.






39. A Complete frame






40. Preserve Shape






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






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






43. Preserve Direction






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






45. Global Positioning System.






46. Points - Polygons - Lines






47. A reference system (geographic coordinates)






48. Can not be made from other colors






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






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