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






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






3. A reference system (geographic coordinates)






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






5. 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.






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






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






8. To avoid corrupt data!






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






10. Blue - Green - Red - NIR....






11. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






12. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






13. Most popular form of USGS Map

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14. Essentials of DBMS: Each record has a ________






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






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






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






18. Description by name: ex London






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






20. Provide information about a particular topic or theme.






21. A Complete frame






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






23. A line segment between 2 nodes -1 of which is a start node & the other an end node.






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






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






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






27. Accuracy - reliability - responsibility.






28. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






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






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






31. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






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






33. When parallels & meridians intersect at right angles.






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






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






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






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






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






39. Smoothing & Shape abstraction.






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






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






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






43. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






44. GIS is ________






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






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






47. Can not be made from other colors






48. Google Maps or Microsoft Bing.






49. Geographic Coordinate System.






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