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






2. Consists of F & E: 1. Features. 2. Entities.






3. A Complete frame






4. Are made with GIS






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






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






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






8. Map in which some thematic mapping variable is substituted for area (like a graph in a map)






9. Maps are restricted to a __________.






10. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






11. Converts what entities into objects in the computer 1. Geometry (points - lines - polygons). 2. Measurement of attributes. 3. Accuracy &/or error.






12. 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.






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






14. Accuracy - reliability - responsibility.






15. The reverse of each other.






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






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






18. Blue - Green - Red - NIR....






19. Digital Elevation Model






20. Explanatory list of symbols on a map






21. GIS is not a ______






22. 2 ______: 1. Files/records. 2. Database/collection of files.






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






24. GIS is ________






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






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






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






28. Smoothing & Shape abstraction.






29. 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.






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






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






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






33. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






34. Precision of a measurement with respect to time






35. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






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






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






38. Data Modelling - Turning entities into complex objects (geometry - quality).






39. A process of mathematical conversion.






40. 2 common _______: 1. Vector. 2. Raster.






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






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






43. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






44. 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






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






46. Most popular form of USGS Map

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47. Arcs only ___ at Nodes






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






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






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