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. GIS is not a ______






2. Preserve Shape






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






4. Essentials of DBMS: Each record has a ________






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






6. The nature of relationships & connectivity between them.






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






8. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






9. Global Positioning System.






10. An assignment of geographic coordinates to locations.






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






12. 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.






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






14. Accuracy - reliability - responsibility.






15. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






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






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






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






19. Digital Elevation Model






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






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






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






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






24. Maps are restricted to a __________.






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






26. Triangulated Irregular Network.






27. Relative to another known feature






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






29. A reference system (geographic coordinates)






30. Regulary spaced sample of points representing a surface.






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






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






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






34. Explanatory list of symbols on a map






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






36. GIS is ________






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






38. The 4 types of ___________:SADD. 1. S - Shape: Conformal. 2. A - Area: Variant. 3. D - Direction: Preserved. 4. D - Distance: Variant.






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






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






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






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






44. Points - Polygons - Lines






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






46. When parallels & meridians intersect at right angles.






47. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






48. Precision of a measurement with respect to time






49. 80 % of all information contain _________






50. Representative fraction