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






2. Understand spatial relations between landmarks>shortcuts.






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






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






5. 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.






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






7. Preserve Shape






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






9. 2 common _______: 1. Vector. 2. Raster.






10. To avoid corrupt data!






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






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






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






14. The ability to link files together.






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






16. Assigning location information to text & discourse.






17. Lines that connect points of equal value.






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






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






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






21. An assignment of geographic coordinates to locations.






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






23. A reference system (geographic coordinates)






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






25. 2 ______: 1. Files/records. 2. Database/collection of files.






26. Digital Elevation Model






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






28. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






29. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






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






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






32. Symbol on a map used to show direction






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






34. The reverse of each other.






35. A Complete frame






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






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






38. Deliver location / topographic information.






39. Explanatory list of symbols on a map






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






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






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






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






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






45. Can not be made from other colors






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






47. Sailors and pilots use these maps to navigate






48. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






49. Are made with GIS






50. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.