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






2. Representative fraction






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






4. Essentials of DBMS: Each record has a ________






5. GIS is ________






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






7. Preserve Direction






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






9. Sailors and pilots use these maps to navigate






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






11. Digital Elevation Model






12. 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






13. Provide information about a particular topic or theme.






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






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






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






17. The ability to link files together.






18. Assigning location information to text & discourse.






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






20. Points - Polygons - Lines






21. Precision of a measurement with respect to time






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






23. Most popular form of USGS Map

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






25. GIS is not a ______






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






27. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






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






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






30. Global Positioning System.






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






32. Triangulated Irregular Network.






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






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






35. Lines that connect points of equal value.






36. Smoothing & Shape abstraction.






37. The 4 elements or ______: 1. Cell Value - each cell carries a value. 2. Cell size - this determines the resolution. 3. Raster bands - Can have single or multiple bands. 4. Spatial Reference - Raster data must have spatial reference.






38. Geographic Coordinate System.






39. Arcs only ___ at Nodes






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






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






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






43. A reference system (geographic coordinates)






44. A Complete frame






45. 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.






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






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






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






49. An assignment of geographic coordinates to locations.






50. The 5 components of a TIN: NETHT - 1. Nodes 2. Edges 3. Triangles 4. ___ 5. Topology.