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






2. Accuracy - reliability - responsibility.






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






4. Description by name: ex London






5. 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.






6. Google Maps or Microsoft Bing.






7. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






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






9. Arcs only ___ at Nodes






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






11. Points taken at regular intervals from the cumulative distribution function (CDF) of a random variable.






12. Digital Elevation Model






13. 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.






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






15. Regulary spaced sample of points representing a surface.






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






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






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






19. Global Positioning System.






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






21. Sailors and pilots use these maps to navigate






22. Maps are restricted to a __________.






23. Are made with GIS






24. Geographic Coordinate System.






25. The nature of relationships & connectivity between them.






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






28. Triangulated Irregular Network.






29. When parallels & meridians intersect at right angles.






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






31. Points - Polygons - Lines






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






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






34. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






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






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






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






38. The ability to link files together.






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






40. GIS is not a ______






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






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






43. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






44. Provide information about a particular topic or theme.






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






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






47. Deliver location / topographic information.






48. To avoid corrupt data!






49. The reverse of each other.






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