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. 80 % of all information contain _________






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






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






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






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






6. 2 common _______: 1. Vector. 2. Raster.






7. Representative fraction






8. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






9. 2 ______: 1. Files/records. 2. Database/collection of files.






10. To avoid corrupt data!






11. Points taken at regular intervals from the cumulative distribution function (CDF) of a random variable.






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






13. Geographic Coordinate System.






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






15. Blue - Green - Red - NIR....






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






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






18. Symbol on a map used to show direction






19. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






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






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






22. An assignment of geographic coordinates to locations.






23. Essentials of DBMS: Each record has a ________






24. A Complete frame






25. Maps are restricted to a __________.






26. A reference system (geographic coordinates)






27. Contour lines never _______






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






29. A process of mathematical conversion.






30. Most popular form of USGS Map






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






32. Provide information about a particular topic or theme.






33. Precision of a measurement with respect to time






34. 3 topological concepts: 1. Connectivity - arcs connect to each other at nodes. 2._______ - arcs that connect to surround an area define a polygon. 3. Contiguity - arcs have direction & left & right sides.






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






36. GIS is not a ______






37. 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






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






39. The reverse of each other.






40. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






41. Smoothing & Shape abstraction.






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






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






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






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






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






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






48. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






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






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