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






2. Geographic Coordinate System.






3. Sailors and pilots use these maps to navigate






4. 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.






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






6. Arcs only ___ at Nodes






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






8. A process of mathematical conversion.






9. Provide information about a particular topic or theme.






10. Are made with GIS






11. The reverse of each other.






12. Preserve Direction






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






14. When parallels & meridians intersect at right angles.






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






16. Townships were six miles square - and were subdivided into 36 sections - each section consisting of one square mile. One section of each township was set aside to support public education - and the remaining sections were to be sold at public auction






17. Precision of a measurement with respect to time






18. The nature of relationships & connectivity between them.






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






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






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






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






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






24. Most popular form of USGS Map

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






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






27. Accuracy - reliability - responsibility.






28. Can not be made from other colors






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






30. Triangulated Irregular Network.






31. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






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






33. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






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






35. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






36. To avoid corrupt data!






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






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






39. Deliver location / topographic information.






40. Maps are restricted to a __________.






41. Blue - Green - Red - NIR....






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






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






44. Essentials of DBMS: Each record has a ________






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






46. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






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






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






49. Digital Elevation Model






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