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






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






3. Deliver location / topographic information.






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






5. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






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






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






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






9. Geographic Coordinate System.






10. When parallels & meridians intersect at right angles.






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






12. 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.






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






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






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






16. The ability to link files together.






17. 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.






18. Symbol on a map used to show direction






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






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






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






22. Contour lines never _______






23. 2 common _______: 1. Vector. 2. Raster.






24. Google Maps or Microsoft Bing.






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






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






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






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






29. Identify unique points - patterns or features in space.






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






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






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






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






34. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






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






36. Assigning location information to text & discourse.






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






38. Regulary spaced sample of points representing a surface.






39. Relative to another known feature






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






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






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






43. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






44. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






45. The nature of relationships & connectivity between them.






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






47. Provide information about a particular topic or theme.






48. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






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






50. Digital Elevation Model