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. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






2. 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.






3. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






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






5. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






6. Geographic Coordinate System.






7. Provide information about a particular topic or theme.






8. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






9. An assignment of geographic coordinates to locations.






10. Maps are restricted to a __________.






11. Global Positioning System.






12. Can not be made from other colors






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






14. Accuracy - reliability - responsibility.






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






16. Symbol on a map used to show direction






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






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






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






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






21. A process of mathematical conversion.






22. To avoid corrupt data!






23. Deliver location / topographic information.






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






25. Contour lines never _______






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






27. The ability to link files together.






28. Lines that connect points of equal value.






29. GIS is not a ______






30. Preserve Shape






31. The reverse of each other.






32. 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






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






34. Digital Elevation Model






35. 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.






36. 2 ______: 1. Files/records. 2. Database/collection of files.






37. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






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






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






40. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






41. Understand spatial relations between landmarks>shortcuts.






42. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






43. 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.






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






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






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






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






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






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






50. Assigning location information to text & discourse.