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






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






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






4. Contour lines never _______






5. Digital Elevation Model






6. Lines that connect points of equal value.






7. Representative fraction






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






9. Points - Polygons - Lines






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






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






12. Description by name: ex London






13. The reverse of each other.






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






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






16. The ability to link files together.






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






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






19. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






20. Blue - Green - Red - NIR....






21. Understand spatial relations between landmarks>shortcuts.






22. Sailors and pilots use these maps to navigate






23. Provide information about a particular topic or theme.






24. Global Positioning System.






25. 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.






26. Are made with GIS






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






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






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






30. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






31. GIS is ________






32. Geographic Coordinate System.






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






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






35. An assignment of geographic coordinates to locations.






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






37. When parallels & meridians intersect at right angles.






38. 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.






39. GIS is not a ______






40. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






41. Assigning location information to text & discourse.






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






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






44. Explanatory list of symbols on a map






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






46. User generated content (UGC). Volunteered geog. info (VGI). Professional vs amateur. Neogeography vs GIS.






47. Preserve Shape






48. Maps are restricted to a __________.






49. Relative to another known feature






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