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






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






3. The reverse of each other.






4. Arcs only ___ at Nodes






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






6. Preserve Direction






7. 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






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






9. Description by name: ex London






10. Understand spatial relations between landmarks>shortcuts.






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






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






13. Representative fraction






14. Smoothing & Shape abstraction.






15. Explanatory list of symbols on a map






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






17. Points - Polygons - Lines






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






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






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






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






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






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






24. The ability to link files together.






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






26. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






27. Lines that connect points of equal value.






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






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






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






31. 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.






32. When parallels & meridians intersect at right angles.






33. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






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






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






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






37. Relative to another known feature






38. Sailors and pilots use these maps to navigate






39. 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.






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






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






42. Assigning location information to text & discourse.






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






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






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






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






47. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






48. A reference system (geographic coordinates)






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






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