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






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






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






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






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






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






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






8. Assigning location information to text & discourse.






9. Accuracy - reliability - responsibility.






10. Explanatory list of symbols on a map






11. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






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






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






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






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






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






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






18. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






19. 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.






20. Maps are restricted to a __________.






21. Representative fraction






22. 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.






23. Can not be made from other colors






24. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






25. Preserve Direction






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






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






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






29. To avoid corrupt data!






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






31. HAL - H-Human nature. A-Arbitrary/socially constructed. L-Loss of info (hiding variance within a class or group).






32. Provide information about a particular topic or theme.






33. Arcs only ___ at Nodes






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






35. The nature of relationships & connectivity between them.






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






37. Smoothing & Shape abstraction.






38. When parallels & meridians intersect at right angles.






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






40. Blue - Green - Red - NIR....






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






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






43. The reverse of each other.






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






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






46. Google Maps or Microsoft Bing.






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






48. Most popular form of USGS Map

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49. Digital Elevation Model






50. 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