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






2. Google Maps or Microsoft Bing.






3. Preserve Direction






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






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






6. 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.






7. Digital Elevation Model






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






9. Most popular form of USGS Map

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






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






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






13. 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.






14. Global Positioning System.






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






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






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






18. 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.






19. Contour lines never _______






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






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






22. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






23. Preserve Shape






24. 2 ______: 1. Files/records. 2. Database/collection of files.






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






26. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






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






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






29. Can not be made from other colors






30. Sailors and pilots use these maps to navigate






31. A reference system (geographic coordinates)






32. 2 common _______: 1. Vector. 2. Raster.






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






34. Understand spatial relations between landmarks>shortcuts.






35. Explanatory list of symbols on a map






36. A process of mathematical conversion.






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






38. Lines that connect points of equal value.






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






40. Arcs only ___ at Nodes






41. To avoid corrupt data!






42. GIS is ________






43. The nature of relationships & connectivity between them.






44. Precision of a measurement with respect to time






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






46. GIS is not a ______






47. Regulary spaced sample of points representing a surface.






48. The reverse of each other.






49. Smoothing & Shape abstraction.






50. A Complete frame