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






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






3. Smoothing & Shape abstraction.






4. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






5. Triangulated Irregular Network.






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






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






8. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






9. To avoid corrupt data!






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






11. The nature of relationships & connectivity between them.






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






13. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






14. Provide information about a particular topic or theme.






15. Representative fraction






16. When parallels & meridians intersect at right angles.






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






18. A process of mathematical conversion.






19. Description by name: ex London






20. The reverse of each other.






21. Essentials of DBMS: Each record has a ________






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






23. A reference system (geographic coordinates)






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






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






26. Arcs only ___ at Nodes






27. Contour lines never _______






28. Symbol on a map used to show direction






29. Preserve Shape






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






31. Global Positioning System.






32. Geographic Coordinate System.






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






34. Most popular form of USGS Map

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35. 80 % of all information contain _________






36. Lines that connect points of equal value.






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






38. 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.






39. Maps are restricted to a __________.






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






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






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






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






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






45. Accuracy - reliability - responsibility.






46. Regulary spaced sample of points representing a surface.






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






48. Sailors and pilots use these maps to navigate






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






50. Relative to another known feature