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. An assignment of geographic coordinates to locations.






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






3. Sailors and pilots use these maps to navigate






4. 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.






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






6. 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.






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






8. A reference system (geographic coordinates)






9. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






10. Most popular form of USGS Map

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






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






13. Defined by NOIR NOIR N-Nominal - qualitive data. O-Ordinal - order or ranking. I-Interval - numeric scale - arbitrary units. R - Ratio - fixed origin - continuous scale.






14. Smoothing & Shape abstraction.






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






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






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






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






19. Precision of a measurement with respect to time






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






21. HAL - H-Human nature. A-Arbitrary/socially constructed. L-Loss of info (hiding variance within a class or group).






22. Description by name: ex London






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






24. Assigning location information to text & discourse.






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






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






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






28. Blue - Green - Red - NIR....






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






30. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






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






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






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






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






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






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






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






38. 2 common _______: 1. Vector. 2. Raster.






39. To avoid corrupt data!






40. Lines that connect points of equal value.






41. The reverse of each other.






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






43. GIS is ________






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






45. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






46. Points - Polygons - Lines






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






48. Contour lines never _______






49. Accuracy - reliability - responsibility.






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