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. 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.






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






3. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






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






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






6. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






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






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






9. Representative fraction






10. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






11. The reverse of each other.






12. GIS is not a ______






13. GIS is ________






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






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






16. 80 % of all information contain _________






17. Maps are restricted to a __________.






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






19. Uses coordinates (X -Y) to represent spatial features. Scale matters involve what Polygons<>points. Polygons<>lines.






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






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






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






23. Symbol on a map used to show direction






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






25. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






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






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






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






29. Understand spatial relations between landmarks>shortcuts.






30. Explanatory list of symbols on a map






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






32. Points - Polygons - Lines






33. _________ of the Real World: (S&E - S&S - G&A) 1. Selection & Elimination. 2. Simplification & Smoothing. 3. Generalization & Aggregation.






34. Provide information about a particular topic or theme.






35. Arcs only ___ at Nodes






36. Preserve Direction






37. Global Positioning System.






38. A process of mathematical conversion.






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






40. Sailors and pilots use these maps to navigate






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






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






43. Description by name: ex London






44. A Complete frame






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






46. Preserve Shape






47. Google Maps or Microsoft Bing.






48. Assigning location information to text & discourse.






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






50. Regulary spaced sample of points representing a surface.