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 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.






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






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






4. Regulary spaced sample of points representing a surface.






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






6. 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






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






8. Geographic Coordinate System.






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






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






11. An assignment of geographic coordinates to locations.






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






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






14. Title - legend or key - grid system - distance scale - direction and compass rose






15. Contour lines never _______






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






17. Symbol on a map used to show direction






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






19. Deliver location / topographic information.






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






21. Most popular form of USGS Map

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22. 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.






23. 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.






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






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






26. A Complete frame






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






28. 80 % of all information contain _________






29. Map in which some thematic mapping variable is substituted for area (like a graph in a map)






30. Digital Elevation Model






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






32. Representative fraction






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






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






35. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






36. Lines that connect points of equal value.






37. Google Maps or Microsoft Bing.






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






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






40. Provide information about a particular topic or theme.






41. Arcs only ___ at Nodes






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






43. Accuracy - reliability - responsibility.






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






45. Maps are restricted to a __________.






46. Preserve Shape






47. Essentials of DBMS: Each record has a ________






48. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






49. A reference system (geographic coordinates)






50. Description by name: ex London