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. Accuracy - reliability - responsibility.






2. An assignment of geographic coordinates to locations.






3. Preserve Direction






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






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






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






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






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






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






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






11. Smoothing & Shape abstraction.






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






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






14. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






15. Assigning location information to text & discourse.






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






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






18. The ability to link files together.






19. 2 ______: 1. Files/records. 2. Database/collection of files.






20. Arcs only ___ at Nodes






21. Global Positioning System.






22. The nature of relationships & connectivity between them.






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






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






25. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






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






27. A reference system (geographic coordinates)






28. Description by name: ex London






29. Representative fraction






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






31. The reverse of each other.






32. GIS is ________






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






34. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






35. Google Maps or Microsoft Bing.






36. Are made with GIS






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






38. Provide information about a particular topic or theme.






39. Regulary spaced sample of points representing a surface.






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






41. 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.






42. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






43. Deliver location / topographic information.






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






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






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






47. Essentials of DBMS: Each record has a ________






48. Digital Elevation Model






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






50. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.