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. 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.






2. Arcs only ___ at Nodes






3. To avoid corrupt data!






4. Contour lines never _______






5. Google Maps or Microsoft Bing.






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






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






8. Points taken at regular intervals from the cumulative distribution function (CDF) of a random variable.






9. 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.






10. Blue - Green - Red - NIR....






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






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






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






14. A Complete frame






15. The 4 types of ___________:SADD. 1. S - Shape: Conformal. 2. A - Area: Variant. 3. D - Direction: Preserved. 4. D - Distance: Variant.






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






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






18. An assignment of geographic coordinates to locations.






19. A process of mathematical conversion.






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






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






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






23. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






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






25. Smoothing & Shape abstraction.






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






27. GIS is not a ______






28. Symbol on a map used to show direction






29. When parallels & meridians intersect at right angles.






30. Provide information about a particular topic or theme.






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






32. Preserve Shape






33. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






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






35. Precision of a measurement with respect to time






36. Are made with GIS






37. Global Positioning System.






38. The reverse of each other.






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






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






41. Representative fraction






42. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






43. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






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






45. The ability to link files together.






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






47. Can not be made from other colors






48. 2 ______: 1. Files/records. 2. Database/collection of files.






49. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






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