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. Representative fraction






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






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






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






5. Assigning location information to text & discourse.






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






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






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






9. The reverse of each other.






10. A reference system (geographic coordinates)






11. Explanatory list of symbols on a map






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






13. Most popular form of USGS Map

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






15. An assignment of geographic coordinates to locations.






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






17. Can not be made from other colors






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






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






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






21. Triangulated Irregular Network.






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






23. Relative to another known feature






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






25. Contour lines never _______






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






27. When parallels & meridians intersect at right angles.






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






29. GIS is ________






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






31. Essentials of DBMS: Each record has a ________






32. Precision of a measurement with respect to time






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






34. Smoothing & Shape abstraction.






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






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






37. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






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






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






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






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






42. 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.






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






44. Description by name: ex London






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






46. Digital Elevation Model






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






48. Arcs only ___ at Nodes






49. 2 ______: 1. Files/records. 2. Database/collection of files.






50. 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.