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






2. Arcs only ___ at Nodes






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






4. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






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






6. 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






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






8. An assignment of geographic coordinates to locations.






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






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






11. Triangulated Irregular Network.






12. To avoid corrupt data!






13. Maps are restricted to a __________.






14. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






15. A reference system (geographic coordinates)






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






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






18. 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.






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






20. Provide information about a particular topic or theme.






21. 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.






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






23. Preserve Direction






24. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






25. Deliver location / topographic information.






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






27. Lines that connect points of equal value.






28. Google Maps or Microsoft Bing.






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






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






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






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






33. The ability to link files together.






34. Can not be made from other colors






35. A Complete frame






36. Geographic Coordinate System.






37. 2 ______: 1. Files/records. 2. Database/collection of files.






38. Description by name: ex London






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






40. Accuracy - reliability - responsibility.






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






42. Blue - Green - Red - NIR....






43. GIS is not a ______






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






45. Symbol on a map used to show direction






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






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






48. 80 % of all information contain _________






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






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