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






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






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






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






5. Google Maps or Microsoft Bing.






6. The nature of relationships & connectivity between them.






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






8. Defined by NOIR NOIR N-Nominal - qualitive data. O-Ordinal - order or ranking. I-Interval - numeric scale - arbitrary units. R - Ratio - fixed origin - continuous scale.






9. 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






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






11. Deliver location / topographic information.






12. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






13. 2 ______: 1. Files/records. 2. Database/collection of files.






14. Global Positioning System.






15. Explanatory list of symbols on a map






16. Provide information about a particular topic or theme.






17. Precision of a measurement with respect to time






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






19. The reverse of each other.






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






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






22. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






23. Symbol on a map used to show direction






24. 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.






25. Maps are restricted to a __________.






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






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






28. 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.






29. Regulary spaced sample of points representing a surface.






30. Assigning location information to text & discourse.






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






32. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






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






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






35. 80 % of all information contain _________






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






37. A Complete frame






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






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






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






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






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






43. Preserve Direction






44. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






45. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






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






47. A map containing information on only one topic or theme.






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






49. Most popular form of USGS Map

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50. The ability to link files together.