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. When parallels & meridians intersect at right angles.






2. 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






3. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






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






5. 2 ______: 1. Files/records. 2. Database/collection of files.






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






7. An assignment of geographic coordinates to locations.






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






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






10. To avoid corrupt data!






11. 80 % of all information contain _________






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






13. The 2 _____ in data modelling: 1. Database. 2. Data Storage.






14. Google Maps or Microsoft Bing.






15. GIS is not a ______






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






17. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






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






19. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






20. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






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






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






23. Triangulated Irregular Network.






24. Preserve Direction






25. Connectivity: ___________. 3 elements 1. Nodes & vertices define the shape of the arc. 2. Arcs have a from-node (or starting node) & a to-node (or ending-node). 3. Arcs only join at nodes.






26. Regulary spaced sample of points representing a surface.






27. Maps are restricted to a __________.






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






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






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






31. Preserve Shape






32. Most popular form of USGS Map

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






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






35. Blue - Green - Red - NIR....






36. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






37. A reference system (geographic coordinates)






38. Smoothing & Shape abstraction.






39. Can not be made from other colors






40. Accuracy - reliability - responsibility.






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






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






43. Provide information about a particular topic or theme.






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






45. Precision of a measurement with respect to time






46. GIS is ________






47. 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.






48. Are made with GIS






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






50. Relative to another known feature