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






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






3. The reverse of each other.






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






5. An assignment of geographic coordinates to locations.






6. 1. E - Ellipsoid dimensions. 2. D - Datum origin. 3. A - Angular alignment.






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






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






9. Description by name: ex London






10. Assigning location information to text & discourse.






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






12. Blue - Green - Red - NIR....






13. Points - Polygons - Lines






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






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






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






17. To avoid corrupt data!






18. Global Positioning System.






19. Provide information about a particular topic or theme.






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






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






24. The ability to link files together.






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






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






27. GIS is ________






28. 2 ______: 1. Files/records. 2. Database/collection of files.






29. A Complete frame






30. A tabular file containing rows and columns; descriptive attributes about some object such as a geographic feature are contained in each row






31. Sailors and pilots use these maps to navigate






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






33. Accuracy - reliability - responsibility.






34. Understand spatial relations between landmarks>shortcuts.






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






36. Regulary spaced sample of points representing a surface.






37. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






38. Symbol on a map used to show direction






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






40. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






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






42. 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.






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






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






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






46. Preserve Shape






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






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






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






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