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. Most popular form of USGS Map

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






3. Understand spatial relations between landmarks>shortcuts.






4. Points - Polygons - Lines






5. Sailors and pilots use these maps to navigate






6. Google Maps or Microsoft Bing.






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






8. Explanatory list of symbols on a map






9. 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.






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






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






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






13. Can not be made from other colors






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






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






16. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






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






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






19. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






20. A Complete frame






21. An assignment of geographic coordinates to locations.






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






23. Arcs only ___ at Nodes






24. Digital Elevation Model






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






26. Assigning location information to text & discourse.






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






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






29. GIS is not a ______






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






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






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






33. Accuracy - reliability - responsibility.






34. Precision of a measurement with respect to time






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






36. 2 common _______: 1. Vector. 2. Raster.






37. Regulary spaced sample of points representing a surface.






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






39. Blue - Green - Red - NIR....






40. Provide information about a particular topic or theme.






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






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






43. Representative fraction






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






45. The nature of relationships & connectivity between them.






46. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






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






48. Essentials of DBMS: Each record has a ________






49. Preserve Shape






50. A reference system (geographic coordinates)