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. Relative to another known feature






2. 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.






3. 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






4. Accuracy - reliability - responsibility.






5. Essentials of DBMS: Each record has a ________






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






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






8. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






9. Global Positioning System.






10. Precision of a measurement with respect to time






11. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






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






13. Contour lines never _______






14. Sailors and pilots use these maps to navigate






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






16. Digital Elevation Model






17. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






18. GIS is ________






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






20. The reverse of each other.






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






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






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






24. Classes based on natural groupings through examination of histogram (good: minimizes differences bad: data range uneven)






25. Symbol on a map used to show direction






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






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






28. Assigning location information to text & discourse.






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






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






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






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






33. 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.






34. A Complete frame






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






36. 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.






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






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






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






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






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






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






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






44. Provide information about a particular topic or theme.






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






46. Regulary spaced sample of points representing a surface.






47. Maps are restricted to a __________.






48. Lines that connect points of equal value.






49. Arcs only ___ at Nodes






50. Are made with GIS






Can you answer 50 questions in 15 minutes?



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