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. Provide information about a particular topic or theme.






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






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






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






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






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






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






8. A reference system (geographic coordinates)






9. 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.






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






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






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






13. Precision of a measurement with respect to time






14. Lines that connect points of equal value.






15. Contour lines never _______






16. 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.






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






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






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






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






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






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






23. An assignment of geographic coordinates to locations.






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






25. 2 common _______: 1. Vector. 2. Raster.






26. The nature of relationships & connectivity between them.






27. Global Positioning System.






28. Description by name: ex London






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






30. Representative fraction






31. Regulary spaced sample of points representing a surface.






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






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






34. 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






35. Explanatory list of symbols on a map






36. Sailors and pilots use these maps to navigate






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






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






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






40. Smoothing & Shape abstraction.






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






42. Symbol on a map used to show direction






43. Are made with GIS






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






45. 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.






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






47. Triangulated Irregular Network.






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






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






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