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. The reverse of each other.






2. Most popular form of USGS Map

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3. Lines that connect points of equal value.






4. Are made with GIS






5. Representative fraction






6. Assigning location information to text & discourse.






7. 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.






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






9. Triangulated Irregular Network.






10. Understand spatial relations between landmarks>shortcuts.






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






12. Provide information about a particular topic or theme.






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






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






15. Points - Polygons - Lines






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






17. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






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






19. Geographic Coordinate System.






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






21. Global Positioning System.






22. Smoothing & Shape abstraction.






23. Regulary spaced sample of points representing a surface.






24. A process of mathematical conversion.






25. Contour lines never _______






26. The ability to link files together.






27. The nature of relationships & connectivity between them.






28. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






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






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






31. GIS is ________






32. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






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






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






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






36. To avoid corrupt data!






37. 2 ______: 1. Files/records. 2. Database/collection of files.






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






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






40. 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.






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






42. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






43. GIS is not a ______






44. Deliver location / topographic information.






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






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






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






48. 2 common _______: 1. Vector. 2. Raster.






49. Explanatory list of symbols on a map






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