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






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






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






4. Relative to another known feature






5. Digital Elevation Model






6. To avoid corrupt data!






7. 2 common _______: 1. Vector. 2. Raster.






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






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






10. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






11. The range of wavelengths sampled by a remote sensor.






12. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






13. Contour lines never _______






14. Precision of a measurement with respect to time






15. Arcs only ___ at Nodes






16. 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.






17. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






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






19. Data Modelling - Turning entities into complex objects (geometry - quality).






20. Can not be made from other colors






21. 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






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






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






24. Essentials of DBMS: Each record has a ________






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






26. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






27. Maps are restricted to a __________.






28. 2 ______: 1. Files/records. 2. Database/collection of files.






29. Geographic Coordinate System.






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






31. Preserve Shape






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






33. Symbol on a map used to show direction






34. Triangulated Irregular Network.






35. Explanatory list of symbols on a map






36. GIS is not a ______






37. Are made with GIS






38. 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.






39. GIS is ________






40. A Complete frame






41. Google Maps or Microsoft Bing.






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






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






44. Preserve Direction






45. When parallels & meridians intersect at right angles.






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






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






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






49. Points - Polygons - Lines






50. The ability to link files together.