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






2. Lines that connect points of equal value.






3. When parallels & meridians intersect at right angles.






4. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






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






6. Symbol on a map used to show direction






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






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






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






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






11. The 5 components of a TIN: NETHT - 1. Nodes 2. Edges 3. Triangles 4. ___ 5. Topology.






12. The nature of relationships & connectivity between them.






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






14. A Complete frame






15. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






16. Preserve Direction






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






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






19. Global Positioning System.






20. To avoid corrupt data!






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






22. 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.






23. Google Maps or Microsoft Bing.






24. Description by name: ex London






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






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






27. The reverse of each other.






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






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






30. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






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






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






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






34. Understand spatial relations between landmarks>shortcuts.






35. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






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






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






38. Assigning location information to text & discourse.






39. Can not be made from other colors






40. Maps are restricted to a __________.






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






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






43. 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.






44. Smoothing & Shape abstraction.






45. Arcs only ___ at Nodes






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






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






48. GIS is ________






49. Blue - Green - Red - NIR....






50. DBMS used for: _______ - access - organize & edit.