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






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






3. Precision of a measurement with respect to time






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






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






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






7. GIS is ________






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






9. 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.






10. Arcs only ___ at Nodes






11. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






12. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






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






14. Understand spatial relations between landmarks>shortcuts.






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






16. 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.






17. Symbol on a map used to show direction






18. Geographic Coordinate System.






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






20. 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.






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






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






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






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






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






27. A reference system (geographic coordinates)






28. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






29. When parallels & meridians intersect at right angles.






30. Are made with GIS






31. A process of mathematical conversion.






32. Most popular form of USGS Map

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






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






35. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






36. Regulary spaced sample of points representing a surface.






37. 2 common _______: 1. Vector. 2. Raster.






38. Deliver location / topographic information.






39. Preserve Direction






40. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






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






42. Lines that connect points of equal value.






43. The reverse of each other.






44. 80 % of all information contain _________






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






46. Digital Elevation Model






47. Provide information about a particular topic or theme.






48. Sailors and pilots use these maps to navigate






49. The nature of relationships & connectivity between them.






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