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. Can not be made from other colors






2. Are made with GIS






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






4. Understand spatial relations between landmarks>shortcuts.






5. Geographic Coordinate System.






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






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






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






9. Lines that connect points of equal value.






10. Provide information about a particular topic or theme.






11. Representative fraction






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






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






14. Preserve Direction






15. 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.






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






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






18. Digital Elevation Model






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






20. 80 % of all information contain _________






21. Most popular form of USGS Map

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






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






24. Regulary spaced sample of points representing a surface.






25. The ability to link files together.






26. 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.






27. A Complete frame






28. 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.






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






30. Contour lines never _______






31. Deliver location / topographic information.






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






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






34. GIS is not a ______






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






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






37. Description by name: ex London






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






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






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






41. A reference system (geographic coordinates)






42. Preserve Shape






43. GIS is ________ - spatial analysis & dependent on the computer.






44. Precision of a measurement with respect to time






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






46. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






47. Smoothing & Shape abstraction.






48. To avoid corrupt data!






49. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






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