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






2. Arcs only ___ at Nodes






3. Geographic Coordinate System.






4. Description by name: ex London






5. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






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






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






8. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






9. Points - Polygons - Lines






10. Deliver location / topographic information.






11. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






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






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






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






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






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






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






18. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






19. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






20. Explanatory list of symbols on a map






21. 2 ______: 1. Files/records. 2. Database/collection of files.






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






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






24. Precision of a measurement with respect to time






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






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






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






28. 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






29. When parallels & meridians intersect at right angles.






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






31. Assigning location information to text & discourse.






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






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






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






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






36. A Complete frame






37. Accuracy - reliability - responsibility.






38. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






39. Most popular form of USGS Map

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40. 80 % of all information contain _________






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






42. A reference system (geographic coordinates)






43. The reverse of each other.






44. The ability to link files together.






45. Preserve Shape






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






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






48. 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.






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






50. Preserve Direction