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. GIS is ________






2. Most popular form of USGS Map

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3. Preserve Shape






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






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






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






7. Lines that connect points of equal value.






8. Global Positioning System.






9. To avoid corrupt data!






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






11. Points - Polygons - Lines






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






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






14. Maps are restricted to a __________.






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






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






17. Representative fraction






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






19. Accuracy - reliability - responsibility.






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






21. Arcs only ___ at Nodes






22. 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






23. Digital Elevation Model






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






25. Smoothing & Shape abstraction.






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






27. Can not be made from other colors






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






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






30. Regulary spaced sample of points representing a surface.






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






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






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






34. 80 % of all information contain _________






35. The nature of relationships & connectivity between them.






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






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






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






40. A process of mathematical conversion.






41. An assignment of geographic coordinates to locations.






42. The ability to link files together.






43. Explanatory list of symbols on a map






44. Understand spatial relations between landmarks>shortcuts.






45. Essentials of DBMS: Each record has a ________






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






47. When parallels & meridians intersect at right angles.






48. Relative to another known feature






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






50. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.