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. Most popular form of USGS Map

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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. The ability to link files together.






4. A reference system (geographic coordinates)






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






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






7. The nature of relationships & connectivity between them.






8. The 5 components of a TIN: NETHT - 1. Nodes 2. Edges 3. Triangles 4. ___ 5. Topology.






9. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






10. Geographic Coordinate System.






11. Arcs only ___ at Nodes






12. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






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






14. The reverse of each other.






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






16. Symbol on a map used to show direction






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






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






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






20. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






21. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






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






23. Google Maps or Microsoft Bing.






24. To avoid corrupt data!






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






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






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






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






29. When parallels & meridians intersect at right angles.






30. Regulary spaced sample of points representing a surface.






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






32. 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.






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






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






35. 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






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






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






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






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






40. 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.






41. Points - Polygons - Lines






42. Can not be made from other colors






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






44. Triangulated Irregular Network.






45. A Complete frame






46. A process of mathematical conversion.






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






48. 2 ______: 1. Files/records. 2. Database/collection of files.






49. Digital Elevation Model






50. Description by name: ex London