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






2. Preserve Direction






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






4. Contour lines never _______






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






6. Representative fraction






7. Essentials of DBMS: Each record has a ________






8. Sailors and pilots use these maps to navigate






9. 2 common _______: 1. Vector. 2. Raster.






10. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






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






12. Geographic Coordinate System.






13. Global Positioning System.






14. Most popular form of USGS Map

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






16. A line segment between 2 nodes -1 of which is a start node & the other an end node.






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






18. Description by name: ex London






19. Real Things (trees - forests - cities etc).






20. 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






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






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






23. Points - Polygons - Lines






24. GIS is ________






25. Provide information about a particular topic or theme.






26. Preserve Shape






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






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






29. GIS is not a ______






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






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






32. Explanatory list of symbols on a map






33. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






34. 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.






35. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






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






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






38. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






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






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






41. A process of mathematical conversion.






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






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






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






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






46. 2 ______: 1. Files/records. 2. Database/collection of files.






47. The ability to link files together.






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






49. Symbol on a map used to show direction






50. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.