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. 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.






2. A Complete frame






3. A reference system (geographic coordinates)






4. Google Maps or Microsoft Bing.






5. The nature of relationships & connectivity between them.






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






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






8. The reverse of each other.






9. 2 ______: 1. Files/records. 2. Database/collection of files.






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






11. Preserve Direction






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






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






14. The study of place names - origins - history & meanings.






15. 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.






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






17. Lines that connect points of equal value.






18. Deliver location / topographic information.






19. Sailors and pilots use these maps to navigate






20. Maps are restricted to a __________.






21. Accuracy - reliability - responsibility.






22. Are made with GIS






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






24. Provide information about a particular topic or theme.






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






26. 80 % of all information contain _________






27. A process of mathematical conversion.






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






29. Essentials of DBMS: Each record has a ________






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






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






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






33. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






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






35. Most popular form of USGS Map

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






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






38. GIS is ________






39. Explanatory list of symbols on a map






40. To avoid corrupt data!






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






42. Geographic Coordinate System.






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






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






45. Triangulated Irregular Network.






46. Blue - Green - Red - NIR....






47. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






48. Digital Elevation Model






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






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