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






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






3. Are made with GIS






4. Explanatory list of symbols on a map






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






6. The nature of relationships & connectivity between them.






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






8. An assignment of geographic coordinates to locations.






9. Global Positioning System.






10. Triangulated Irregular Network.






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






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






13. Preserve Shape






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






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






16. Understand spatial relations between landmarks>shortcuts.






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






18. Smoothing & Shape abstraction.






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






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






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






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






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






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






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






26. Accuracy - reliability - responsibility.






27. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






28. 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.






29. The reverse of each other.






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






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






32. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






33. Area of the Earth that is displayed in each image






34. Contour lines never _______






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






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






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






38. A process of mathematical conversion.






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






40. 80 % of all information contain _________






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






42. Regulary spaced sample of points representing a surface.






43. Blue - Green - Red - NIR....






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






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






46. Can not be made from other colors






47. A reference system (geographic coordinates)






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






49. 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






50. 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.