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. A process of mathematical conversion.






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






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






4. Explanatory list of symbols on a map






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






6. Description by name: ex London






7. 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.






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






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






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






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






12. Precision of a measurement with respect to time






13. Provide information about a particular topic or theme.






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






15. Digital Elevation Model






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






17. Maps are restricted to a __________.






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






19. 80 % of all information contain _________






20. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






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






22. The nature of relationships & connectivity between them.






23. Relative to another known feature






24. Assigning location information to text & discourse.






25. Blue - Green - Red - NIR....






26. Preserve Shape






27. GIS is ________






28. A reference system (geographic coordinates)






29. Contour lines never _______






30. Townships were six miles square - and were subdivided into 36 sections - each section consisting of one square mile. One section of each township was set aside to support public education - and the remaining sections were to be sold at public auction






31. Points - Polygons - Lines






32. 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.






33. GIS is not a ______






34. When parallels & meridians intersect at right angles.






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






36. An assignment of geographic coordinates to locations.






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






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






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






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






41. Lines that connect points of equal value.






42. A Complete frame






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






44. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






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






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






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






48. Representative fraction






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






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