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 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.






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






3. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






4. Are made with GIS






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






6. GIS is not a ______






7. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






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






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






11. A Complete frame






12. Provide information about a particular topic or theme.






13. 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






14. Digital Elevation Model






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






16. Regulary spaced sample of points representing a surface.






17. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






18. The reverse of each other.






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






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






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






22. Maps are restricted to a __________.






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






24. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






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






26. Points - Polygons - Lines






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






28. Global Positioning System.






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






30. To avoid corrupt data!






31. Lines that connect points of equal value.






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






33. Essentials of DBMS: Each record has a ________






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






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






36. 2 ______: 1. Files/records. 2. Database/collection of files.






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






38. Contour lines never _______






39. The ability to link files together.






40. Precision of a measurement with respect to time






41. 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.






42. Geographic Coordinate System.






43. 2 common _______: 1. Vector. 2. Raster.






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






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






46. 80 % of all information contain _________






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






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






49. Assigning location information to text & discourse.






50. Triangulated Irregular Network.