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






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






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






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






5. When parallels & meridians intersect at right angles.






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






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






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






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






10. Assigning location information to text & discourse.






11. Lines that connect points of equal value.






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






13. Essentials of DBMS: Each record has a ________






14. Sailors and pilots use these maps to navigate






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






16. Description by name: ex London






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






18. Most popular form of USGS Map


19. Preserve Shape






20. Are made with GIS






21. Explanatory list of symbols on a map






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






23. A reference system (geographic coordinates)






24. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






25. Provide information about a particular topic or theme.






26. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






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






28. The 5 __________: TTCETH - 1. Triangle table 2. Triangle-Node table 3. Coordinate table 4. Triangle-Edge table 5. Hull-Edge table.






29. 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.






30. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






31. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






32. Representative fraction






33. An assignment of geographic coordinates to locations.






34. Triangulated Irregular Network.






35. GIS is ________






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






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






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






39. Global Positioning System.






40. Geographic Coordinate System.






41. Understand spatial relations between landmarks>shortcuts.






42. The ability to link files together.






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






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






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






47. 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






48. A process of mathematical conversion.






49. Digital Elevation Model






50. 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.