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. Smoothing & Shape abstraction.






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






3. 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.






4. The ability to link files together.






5. GIS is not a ______






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






7. Geographic Coordinate System.






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






9. Area of the Earth that is displayed in each image






10. An assignment of geographic coordinates to locations.






11. Contour lines never _______






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






13. Classes based on natural groupings through examination of histogram (good: minimizes differences bad: data range uneven)






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






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






16. Arcs only ___ at Nodes






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






18. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






19. 80 % of all information contain _________






20. Shift in delivery (eg - require user interaction).






21. Assigning location information to text & discourse.






22. Can not be made from other colors






23. The reverse of each other.






24. Lines that connect points of equal value.






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






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






27. Accuracy - reliability - responsibility.






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






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






30. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






31. Description by name: ex London






32. Digital Elevation Model






33. 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.






34. 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.






35. 2 common _______: 1. Vector. 2. Raster.






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






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






38. Essentials of DBMS: Each record has a ________






39. Precision of a measurement with respect to time






40. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






41. The 5 components of a TIN: NETHT - 1. Nodes 2. Edges 3. Triangles 4. ___ 5. Topology.






42. Regulary spaced sample of points representing a surface.






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






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






45. Global Positioning System.






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






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






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






49. 2 ______: 1. Files/records. 2. Database/collection of files.






50. A reference system (geographic coordinates)