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






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






3. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






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






5. Preserve Direction






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






7. Digital Elevation Model






8. Triangulated Irregular Network.






9. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






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






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






12. The reverse of each other.






13. Explanatory list of symbols on a map






14. Global Positioning System.






15. Understand spatial relations between landmarks>shortcuts.






16. Deliver location / topographic information.






17. 80 % of all information contain _________






18. Sailors and pilots use these maps to navigate






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






20. The study of place names - origins - history & meanings.






21. Lines that connect points of equal value.






22. When parallels & meridians intersect at right angles.






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






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






25. Most popular form of USGS Map

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26. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






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






28. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






29. Maps are restricted to a __________.






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






31. To avoid corrupt data!






32. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






33. Blue - Green - Red - NIR....






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






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






36. Precision of a measurement with respect to time






37. Points - Polygons - Lines






38. Provide information about a particular topic or theme.






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






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






41. Preserve Shape






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






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






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






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






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






47. A reference system (geographic coordinates)






48. Are made with GIS






49. Relative to another known feature






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







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Can you answer 50 questions in 15 minutes?


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