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. Description by name: ex London






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






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






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






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






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






7. 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.






8. Preserve Direction






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






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






11. Precision of a measurement with respect to time






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






13. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






14. Google Maps or Microsoft Bing.






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






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






17. 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






18. 3 topological concepts: 1. Connectivity - arcs connect to each other at nodes. 2._______ - arcs that connect to surround an area define a polygon. 3. Contiguity - arcs have direction & left & right sides.






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






20. 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.






21. Triangulated Irregular Network.






22. The reverse of each other.






23. Sailors and pilots use these maps to navigate






24. Can not be made from other colors






25. Digital Elevation Model






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






27. Global Positioning System.






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






29. 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.






30. Contour lines never _______






31. A reference system (geographic coordinates)






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






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






34. Explanatory list of symbols on a map






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






36. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






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






38. 2 ______: 1. Files/records. 2. Database/collection of files.






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






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






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






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






43. The ability to link files together.






44. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






45. Preserve Shape






46. Essentials of DBMS: Each record has a ________






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






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






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






50. 80 % of all information contain _________