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. Regulary spaced sample of points representing a surface.






2. _________ of the Real World: (S&E - S&S - G&A) 1. Selection & Elimination. 2. Simplification & Smoothing. 3. Generalization & Aggregation.






3. Most popular form of USGS Map

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






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






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






7. 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.






8. 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.






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






10. Lines that connect points of equal value.






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






12. Arcs only ___ at Nodes






13. Symbol on a map used to show direction






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






15. The ability to link files together.






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






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






18. An assignment of geographic coordinates to locations.






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






20. Understand spatial relations between landmarks>shortcuts.






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






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






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






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






25. A reference system (geographic coordinates)






26. Global Positioning System.






27. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






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






29. Assigning location information to text & discourse.






30. Points - Polygons - Lines






31. Relative to another known feature






32. Google Maps or Microsoft Bing.






33. Sailors and pilots use these maps to navigate






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






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






36. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






37. GIS is not a ______






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






39. Triangulated Irregular Network.






40. 80 % of all information contain _________






41. The reverse of each other.






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






43. A 3-D frame of reference (model of the earth) used to determine surface locations.






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






45. Deliver location / topographic information.






46. Provide information about a particular topic or theme.






47. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






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






49. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






50. The 5 components of a TIN: NETHT - 1. Nodes 2. Edges 3. Triangles 4. ___ 5. Topology.






Can you answer 50 questions in 15 minutes?



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