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. Relative to another known feature






2. When areas on a map maintain the same proportional relationship to the areas on the earth that they represent.






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






4. A reference system (geographic coordinates)






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






6. Geographic Coordinate System.






7. Accuracy - reliability - responsibility.






8. Description by name: ex London






9. Preserve Direction






10. Explanatory list of symbols on a map






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






12. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






13. A tabular file containing rows and columns; descriptive attributes about some object such as a geographic feature are contained in each row






14. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






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






16. Lines that connect points of equal value.






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






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. Preserve Shape






20. Arcs only ___ at Nodes






21. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






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






23. Can not be made from other colors






24. Provide information about a particular topic or theme.






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






26. Representative fraction






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






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






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






30. An assignment of geographic coordinates to locations.






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






32. Global Positioning System.






33. Regulary spaced sample of points representing a surface.






34. GIS is ________






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






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






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






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






39. Google Maps or Microsoft Bing.






40. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






41. A process of mathematical conversion.






42. When parallels & meridians intersect at right angles.






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






44. Are made with GIS






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






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






47. The 3 _____: 1. True. 2. Magnetic. 3. Grid.






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






49. 2 common _______: 1. Vector. 2. Raster.






50. 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.