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. Preserve Direction






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






3. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






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






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






6. Deliver location / topographic information.






7. A data classification method that divides a set of attribute values into groups that contain an equal range of values






8. Smoothing & Shape abstraction.






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






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






11. Precision of a measurement with respect to time






12. Sailors and pilots use these maps to navigate






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






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






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






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






17. Can not be made from other colors






18. 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.






19. Most popular form of USGS Map

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






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






22. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






23. 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.






24. Understand spatial relations between landmarks>shortcuts.






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






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






27. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






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






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






30. Triangulated Irregular Network.






31. Regulary spaced sample of points representing a surface.






32. 2 common _______: 1. Vector. 2. Raster.






33. GIS is not a ______






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






35. Arcs only ___ at Nodes






36. The ability to link files together.






37. Symbol on a map used to show direction






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






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






40. Contour lines never _______






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






42. Description by name: ex London






43. Representative fraction






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






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






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






47. A Complete frame






48. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






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






50. Lines that connect points of equal value.