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. Explanatory list of symbols on a map






2. Deliver location / topographic information.






3. The range of wavelengths sampled by a remote sensor.






4. Smoothing & Shape abstraction.






5. Provide information about a particular topic or theme.






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






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






8. 80 % of all information contain _________






9. Lines that connect points of equal value.






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






11. To avoid corrupt data!






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






13. An assignment of geographic coordinates to locations.






14. 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.






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






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






17. Most popular form of USGS Map

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


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






19. Representative fraction






20. GIS is ________






21. Blue - Green - Red - NIR....






22. Relative to another known feature






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






24. Regulary spaced sample of points representing a surface.






25. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






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






27. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






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






29. Understand spatial relations between landmarks>shortcuts.






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






31. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






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






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






34. Points - Polygons - Lines






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. Assigning location information to text & discourse.






37. 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.






38. Maps are restricted to a __________.






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






40. 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.






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






42. Google Maps or Microsoft Bing.






43. GIS is not a ______






44. Geographic Coordinate System.






45. 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.






46. The ability to link files together.






47. Precision of a measurement with respect to time






48. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






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






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