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. 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.






2. Geographic Coordinate System.






3. Accuracy - reliability - responsibility.






4. Preserve Shape






5. 2 common _______: 1. Vector. 2. Raster.






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






7. Blue - Green - Red - NIR....






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






9. Triangulated Irregular Network.






10. The ability to link files together.






11. Contour lines never _______






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






13. Understand spatial relations between landmarks>shortcuts.






14. Explanatory list of symbols on a map






15. GIS is not a ______






16. The nature of relationships & connectivity between them.






17. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






18. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






19. A reference system (geographic coordinates)






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






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






22. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






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






24. User generated content (UGC). Volunteered geog. info (VGI). Professional vs amateur. Neogeography vs GIS.






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






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






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






28. Lines that connect points of equal value.






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






30. Regulary spaced sample of points representing a surface.






31. To avoid corrupt data!






32. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






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






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






35. Digital Elevation Model






36. Essentials of DBMS: Each record has a ________






37. GIS is ________






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






39. The smallest pixel size visible in an image - the limit of magnification






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






41. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






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






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






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






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






46. Description by name: ex London






47. Precision of a measurement with respect to time






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






49. 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.






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