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. GIS is not a ______






2. Assigning location information to text & discourse.






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






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






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






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






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






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






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






10. 80 % of all information contain _________






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






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






13. A process of mathematical conversion.






14. Regulary spaced sample of points representing a surface.






15. Representative fraction






16. Most popular form of USGS Map

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17. Triangulated Irregular Network.






18. 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.






19. Preserve Shape






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






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






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






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






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






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






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






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






28. Blue - Green - Red - NIR....






29. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






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






31. 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.






32. Precision of a measurement with respect to time






33. Accuracy - reliability - responsibility.






34. An assignment of geographic coordinates to locations.






35. When parallels & meridians intersect at right angles.






36. 2 common _______: 1. Vector. 2. Raster.






37. The reverse of each other.






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






39. Shift in delivery (eg - require user interaction).






40. Consists of F & E: 1. Features. 2. Entities.






41. Explanatory list of symbols on a map






42. Are made with GIS






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






44. 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.






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






46. Preserve Direction






47. Can not be made from other colors






48. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






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






50. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.