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






2. Explanatory list of symbols on a map






3. Preserve Direction






4. A Complete frame






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






6. Global Positioning System.






7. 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.






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






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






10. 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.






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






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






13. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






14. The nature of relationships & connectivity between them.






15. Precision of a measurement with respect to time






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






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






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






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






20. When parallels & meridians intersect at right angles.






21. 80 % of all information contain _________






22. Accuracy - reliability - responsibility.






23. Can not be made from other colors






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






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






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






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






28. A reference system (geographic coordinates)






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






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






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






33. A process of mathematical conversion.






34. Representative fraction






35. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






36. Smoothing & Shape abstraction.






37. Sailors and pilots use these maps to navigate






38. Contour lines never _______






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






40. Google Maps or Microsoft Bing.






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






42. Provide information about a particular topic or theme.






43. Symbol on a map used to show direction






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






45. 2 common _______: 1. Vector. 2. Raster.






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






47. 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.






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






49. Triangulated Irregular Network.






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