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. An assignment of geographic coordinates to locations.






2. When parallels & meridians intersect at right angles.






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






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






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






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






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






8. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






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






10. The reverse of each other.






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






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






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






14. Essentials of DBMS: Each record has a ________






15. GIS is ________






16. A process of mathematical conversion.






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






18. Smoothing & Shape abstraction.






19. Most popular form of USGS Map

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20. Representative fraction






21. Google Maps or Microsoft Bing.






22. A reference system (geographic coordinates)






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






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






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






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






27. Digital Elevation Model






28. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






29. Points - Polygons - Lines






30. 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






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






32. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






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






34. To avoid corrupt data!






35. The nature of relationships & connectivity between them.






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






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






38. Global Positioning System.






39. Relative to another known feature






40. Geographic Coordinate System.






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






42. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






43. Precision of a measurement with respect to time






44. 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.






45. Explanatory list of symbols on a map






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






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






48. 2 common _______: 1. Vector. 2. Raster.






49. Can not be made from other colors






50. Preserve Direction