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. Symbol on a map used to show direction






2. 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.






3. Understand spatial relations between landmarks>shortcuts.






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






5. Most popular form of USGS Map

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6. The ability to link files together.






7. A Complete frame






8. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






9. Preserve Shape






10. Geographic Coordinate System.






11. Can not be made from other colors






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






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






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






15. An assignment of geographic coordinates to locations.






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






17. The nature of relationships & connectivity between them.






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






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






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






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






22. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






23. Are made with GIS






24. Accuracy - reliability - responsibility.






25. Maps are restricted to a __________.






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






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






28. To avoid corrupt data!






29. When distances from the center of the projection to any other place on the map are uniform in all directions.






30. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






31. Explanatory list of symbols on a map






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






33. Provide information about a particular topic or theme.






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






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






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






37. Digital Elevation Model






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






39. Preserve Direction






40. Arcs only ___ at Nodes






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






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






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






44. Representative fraction






45. Description by name: ex London






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






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






48. When parallels & meridians intersect at right angles.






49. Connectivity: ___________. 3 elements 1. Nodes & vertices define the shape of the arc. 2. Arcs have a from-node (or starting node) & a to-node (or ending-node). 3. Arcs only join at nodes.






50. 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.