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. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






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






3. GIS is not a ______






4. Lines that connect points of equal value.






5. Precision of a measurement with respect to time






6. Google Maps or Microsoft Bing.






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






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






9. Geographic Coordinate System.






10. 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.






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






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






13. 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.






14. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






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






16. Accuracy - reliability - responsibility.






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






18. Smoothing & Shape abstraction.






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






20. Relative to another known feature






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






22. Global Positioning System.






23. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






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






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






26. Preserve Direction






27. 2 ______: 1. Files/records. 2. Database/collection of files.






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






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






30. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






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






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






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






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






35. Most popular form of USGS Map

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






37. Understand spatial relations between landmarks>shortcuts.






38. Triangulated Irregular Network.






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






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






41. Digital Elevation Model






42. Preserve Shape






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






44. A process of mathematical conversion.






45. Arcs only ___ at Nodes






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






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






48. Symbol on a map used to show direction






49. Deliver location / topographic information.






50. 2 common _______: 1. Vector. 2. Raster.