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






3. Shift in delivery (eg - require user interaction).






4. An assignment of geographic coordinates to locations.






5. Points - Polygons - Lines






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






7. Preserve Direction






8. Most popular form of USGS Map

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






10. Maps are restricted to a __________.






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






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






13. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






14. Blue - Green - Red - NIR....






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






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






17. Understand spatial relations between landmarks>shortcuts.






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






19. Geographic Coordinate System.






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






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






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






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






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






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






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






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






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






29. Description by name: ex London






30. 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.






31. Relative to another known feature






32. A process of mathematical conversion.






33. Symbol on a map used to show direction






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






35. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






36. 80 % of all information contain _________






37. Contour lines never _______






38. Explanatory list of symbols on a map






39. 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.






40. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






41. To avoid corrupt data!






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






43. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






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






45. GIS is ________






46. Are made with GIS






47. 2 ______: 1. Files/records. 2. Database/collection of files.






48. The nature of relationships & connectivity between them.






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






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







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