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. Sailors and pilots use these maps to navigate






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






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






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






5. Digital Elevation Model






6. Global Positioning System.






7. The reverse of each other.






8. Smoothing & Shape abstraction.






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






10. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






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






12. Most popular form of USGS Map

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






14. Preserve Direction






15. 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.






16. Preserve Shape






17. 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.






18. The nature of relationships & connectivity between them.






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






20. An assignment of geographic coordinates to locations.






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






22. GIS is not a ______






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






24. Explanatory list of symbols on a map






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






26. Precision of a measurement with respect to time






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






28. A process of mathematical conversion.






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






30. Symbol on a map used to show direction






31. 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.






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






33. The ability to link files together.






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






35. GIS is ________






36. Provide information about a particular topic or theme.






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






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






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






40. Triangulated Irregular Network.






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






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






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






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






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






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






47. Geographic Coordinate System.






48. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






49. Accuracy - reliability - responsibility.






50. A Complete frame