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. Maps are restricted to a __________.






2. Most popular form of USGS Map

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






4. 2 ______: 1. Files/records. 2. Database/collection of files.






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






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






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






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






9. Essentials of DBMS: Each record has a ________






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






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






12. 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






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






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






15. The reverse of each other.






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






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






18. 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.






19. Representative fraction






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






21. To avoid corrupt data!






22. Deliver location / topographic information.






23. Understand spatial relations between landmarks>shortcuts.






24. Triangulated Irregular Network.






25. When parallels & meridians intersect at right angles.






26. 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.






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






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






29. Can not be made from other colors






30. Description by name: ex London






31. Points - Polygons - Lines






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






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






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






35. Sailors and pilots use these maps to navigate






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






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






38. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






39. A process of mathematical conversion.






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






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






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






43. Explanatory list of symbols on a map






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






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






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






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






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






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






50. Global Positioning System.






Can you answer 50 questions in 15 minutes?



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