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. Precision of a measurement with respect to time






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






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






4. Digital Elevation Model






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






6. Blue - Green - Red - NIR....






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






8. 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.






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






10. The nature of relationships & connectivity between them.






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






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






13. Points - Polygons - Lines






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






15. Provide information about a particular topic or theme.






16. 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.






17. An assignment of geographic coordinates to locations.






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






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






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






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






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






23. Assigning location information to text & discourse.






24. When parallels & meridians intersect at right angles.






25. Regulary spaced sample of points representing a surface.






26. Can not be made from other colors






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






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






29. 2 ______: 1. Files/records. 2. Database/collection of files.






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






31. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






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






33. Triangulated Irregular Network.






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






35. GIS is not a ______






36. Relative to another known feature






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






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






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






40. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






41. 2 common _______: 1. Vector. 2. Raster.






42. A Complete frame






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






44. Understand spatial relations between landmarks>shortcuts.






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






46. Smoothing & Shape abstraction.






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






48. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






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






50. Symbol on a map used to show direction