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






2. Sailors and pilots use these maps to navigate






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






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






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






6. 2 ______: 1. Files/records. 2. Database/collection of files.






7. A process of mathematical conversion.






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






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






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






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






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






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






14. Preserve Direction






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






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






17. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






18. Smoothing & Shape abstraction.






19. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






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






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






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






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






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






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






26. GIS is ________ - spatial analysis & dependent on the computer.






27. 80 % of all information contain _________






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






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






30. Relative to another known feature






31. The ability to link files together.






32. Provide information about a particular topic or theme.






33. Accuracy - reliability - responsibility.






34. Understand spatial relations between landmarks>shortcuts.






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






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






37. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






38. A reference system (geographic coordinates)






39. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






40. Representative fraction






41. 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






42. Assigning location information to text & discourse.






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






44. Google Maps or Microsoft Bing.






45. Deliver location / topographic information.






46. 2 common _______: 1. Vector. 2. Raster.






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






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






49. A Complete frame






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