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






2. A process of mathematical conversion.






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






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






5. Are made with GIS






6. Symbol on a map used to show direction






7. Connect & travel between landmarks by moving thru space.






8. Triangulated Irregular Network.






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






10. Assigning location information to text & discourse.






11. Preserve Direction






12. Understand spatial relations between landmarks>shortcuts.






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






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






15. Global Positioning System.






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






17. Arcs only ___ at Nodes






18. 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.






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






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






21. 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.






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






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






24. 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.






25. 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






26. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






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






28. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






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






30. Maps are restricted to a __________.






31. Regulary spaced sample of points representing a surface.






32. Digital Elevation Model






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






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






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






36. 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.






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






38. The nature of relationships & connectivity between them.






39. Accuracy - reliability - responsibility.






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






41. Description by name: ex London






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






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






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






45. Google Maps or Microsoft Bing.






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






47. Deliver location / topographic information.






48. Thematic map that uses dots to represent the frequency of a variable in a given area.






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






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