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. Smoothing & Shape abstraction.






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






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






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






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






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






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






8. An assignment of geographic coordinates to locations.






9. Provide information about a particular topic or theme.






10. Can not be made from other colors






11. Representative fraction






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






13. Are made with GIS






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






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






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






17. The ability to link files together.






18. GIS is not a ______






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






20. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






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






22. Description by name: ex London






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






24. 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.






25. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






26. Precision of a measurement with respect to time






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






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






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






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






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






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






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






34. Preserve Direction






35. The nature of relationships & connectivity between them.






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






37. Relative to another known feature






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






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






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






41. Explanatory list of symbols on a map






42. Contour lines never _______






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






44. Blue - Green - Red - NIR....






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






46. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






47. A process of mathematical conversion.






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






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






50. Points - Polygons - Lines