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






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






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






4. Google Maps or Microsoft Bing.






5. Smoothing & Shape abstraction.






6. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






7. The ability to link files together.






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






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






10. Blue - Green - Red - NIR....






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






12. Arcs only ___ at Nodes






13. A Complete frame






14. Are made with GIS






15. Understand spatial relations between landmarks>shortcuts.






16. LN 1. L - Level Surfaces. 2. N - NAVD88.






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






18. 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.






19. Preserve Direction






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






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






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






23. When parallels & meridians intersect at right angles.






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






25. 80 % of all information contain _________






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






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






28. An assignment of geographic coordinates to locations.






29. The 3 _____: 1. True. 2. Magnetic. 3. Grid.






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






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






32. Description by name: ex London






33. Representative fraction






34. Global Positioning System.






35. Triangulated Irregular Network.






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






37. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






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






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






40. Precision of a measurement with respect to time






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






42. Digital Elevation Model






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






44. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






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






46. Assigning location information to text & discourse.






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






48. The smallest pixel size visible in an image - the limit of magnification






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






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