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






2. Triangulated Irregular Network.






3. Essentials of DBMS: Each record has a ________






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






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






7. Preserve Direction






8. Provide information about a particular topic or theme.






9. A Complete frame






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






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






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






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






14. Explanatory list of symbols on a map






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






16. Geographic Coordinate System.






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






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






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






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






21. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






22. The reverse of each other.






23. 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.






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






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






26. 2 common _______: 1. Vector. 2. Raster.






27. A process of mathematical conversion.






28. Accuracy - reliability - responsibility.






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






30. An assignment of geographic coordinates to locations.






31. Assigning location information to text & discourse.






32. Regulary spaced sample of points representing a surface.






33. Maps are restricted to a __________.






34. The nature of relationships & connectivity between them.






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






36. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






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






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






39. Points - Polygons - Lines






40. 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.






41. Deliver location / topographic information.






42. Smoothing & Shape abstraction.






43. Description by name: ex London






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






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






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






47. Are made with GIS






48. Sailors and pilots use these maps to navigate






49. Digital Elevation Model






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