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. 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.






2. Assigning location information to text & discourse.






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






4. Description by name: ex London






5. A Complete frame






6. GIS is ________






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






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






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






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






11. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






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






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






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






15. Smoothing & Shape abstraction.






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






17. Google Maps or Microsoft Bing.






18. Understand spatial relations between landmarks>shortcuts.






19. Deliver location / topographic information.






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






21. Lines that connect points of equal value.






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






23. The ability to link files together.






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






25. Explanatory list of symbols on a map






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






27. 80 % of all information contain _________






28. Maps are restricted to a __________.






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






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






31. Blue - Green - Red - NIR....






32. 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.






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






34. 2 ______: 1. Files/records. 2. Database/collection of files.






35. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






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






37. 2 common _______: 1. Vector. 2. Raster.






38. Global Positioning System.






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






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






41. 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.






42. Sailors and pilots use these maps to navigate






43. The nature of relationships & connectivity between them.






44. Digital Elevation Model






45. Representative fraction






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






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






48. A process of mathematical conversion.






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






50. Preserve Shape