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. Digital Elevation Model






2. Blue - Green - Red - NIR....






3. The nature of relationships & connectivity between them.






4. To avoid corrupt data!






5. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






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






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






8. The reverse of each other.






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






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






11. Essentials of DBMS: Each record has a ________






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






13. Regulary spaced sample of points representing a surface.






14. 2 common _______: 1. Vector. 2. Raster.






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






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






17. When parallels & meridians intersect at right angles.






18. 80 % of all information contain _________






19. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






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






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






22. Contour lines never _______






23. Connectivity: ___________. 3 elements 1. Nodes & vertices define the shape of the arc. 2. Arcs have a from-node (or starting node) & a to-node (or ending-node). 3. Arcs only join at nodes.






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






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






26. An assignment of geographic coordinates to locations.






27. Sailors and pilots use these maps to navigate






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






29. 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






30. Relative to another known feature






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






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






33. Preserve Direction






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






35. Assigning location information to text & discourse.






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






37. Understand spatial relations between landmarks>shortcuts.






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






39. Preserve Shape






40. Precision of a measurement with respect to time






41. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






42. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






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






44. Lines that connect points of equal value.






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






46. The ability to link files together.






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






48. GIS is ________






49. Explanatory list of symbols on a map






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