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. A process of mathematical conversion.






2. Most popular form of USGS Map

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3. Maps are restricted to a __________.






4. GIS is not a ______






5. 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






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






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






8. Sailors and pilots use these maps to navigate






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






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






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






12. Preserve Direction






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






14. 2 common _______: 1. Vector. 2. Raster.






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






16. Fixed entitites - Can only take a specific value (Ex. number of students in a class - anything that is counted and not measured)






17. 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.






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






19. Relative to another known feature






20. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






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






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






23. Can not be made from other colors






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






25. Points - Polygons - Lines






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. Identify unique points - patterns or features in space.






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






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






30. Explanatory list of symbols on a map






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






32. Google Maps or Microsoft Bing.






33. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






34. GIS is ________






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






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






37. 2 ______: 1. Files/records. 2. Database/collection of files.






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






39. When parallels & meridians intersect at right angles.






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






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






42. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






43. An assignment of geographic coordinates to locations.






44. Global Positioning System.






45. Preserve Shape






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






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






48. Provide information about a particular topic or theme.






49. Precision of a measurement with respect to time






50. Contour lines never _______