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. Triangulated Irregular Network.






2. Understand spatial relations between landmarks>shortcuts.






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






4. Digital Elevation Model






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






6. When parallels & meridians intersect at right angles.






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






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






9. 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






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






11. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






12. Preserve Direction






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






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






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






16. An assignment of geographic coordinates to locations.






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






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






19. The 5 __________: TTCETH - 1. Triangle table 2. Triangle-Node table 3. Coordinate table 4. Triangle-Edge table 5. Hull-Edge table.






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






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






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






23. Are made with GIS






24. Geographic Coordinate System.






25. Blue - Green - Red - NIR....






26. Global Positioning System.






27. Accuracy - reliability - responsibility.






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






29. Lines that connect points of equal value.






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






31. Sailors and pilots use these maps to navigate






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






33. Explanatory list of symbols on a map






34. Can not be made from other colors






35. Relative to another known feature






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






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






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






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






40. Contour lines never _______






41. GIS is not a ______






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






43. The reverse of each other.






44. Smoothing & Shape abstraction.






45. A process of mathematical conversion.






46. 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.






47. Provide information about a particular topic or theme.






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






49. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






50. 80 % of all information contain _________