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






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






3. To avoid corrupt data!






4. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






5. The 4 types of ___________:SADD. 1. S - Shape: Conformal. 2. A - Area: Variant. 3. D - Direction: Preserved. 4. D - Distance: Variant.






6. Description by name: ex London






7. Most popular form of USGS Map

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8. Global Positioning System.






9. A Complete frame






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






11. When distances from the center of the projection to any other place on the map are uniform in all directions.






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






13. Preserve Direction






14. Lines that connect points of equal value.






15. A reference system (geographic coordinates)






16. Understand spatial relations between landmarks>shortcuts.






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






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






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






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






21. 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.






22. Points - Polygons - Lines






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






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






25. 2 common _______: 1. Vector. 2. Raster.






26. Representative fraction






27. Sailors and pilots use these maps to navigate






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






29. Accuracy - reliability - responsibility.






30. Assigning location information to text & discourse.






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






32. Provide information about a particular topic or theme.






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






34. 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.






35. Regulary spaced sample of points representing a surface.






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






37. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






38. Contour lines never _______






39. 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






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






41. Relative to another known feature






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






43. Smoothing & Shape abstraction.






44. When parallels & meridians intersect at right angles.






45. GIS is not a ______






46. An assignment of geographic coordinates to locations.






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






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






49. Symbol on a map used to show direction






50. Geographic Coordinate System.