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






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






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






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






5. The reverse of each other.






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






7. Smoothing & Shape abstraction.






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






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






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






11. Relative to another known feature






12. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






13. Are made with GIS






14. 2 ______: 1. Files/records. 2. Database/collection of files.






15. Representative fraction






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






17. Digital Elevation Model






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






19. Area of the Earth that is displayed in each image






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






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






22. Geographic Coordinate System.






23. Maps are restricted to a __________.






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






25. Symbol on a map used to show direction






26. Essentials of DBMS: Each record has a ________






27. 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.






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






29. 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.






30. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






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






32. 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.






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






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






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






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






37. When parallels & meridians intersect at right angles.






38. Arcs only ___ at Nodes






39. Understand spatial relations between landmarks>shortcuts.






40. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






41. Precision of a measurement with respect to time






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






43. To avoid corrupt data!






44. Lines that connect points of equal value.






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






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






47. The ability to link files together.






48. Assigning location information to text & discourse.






49. Global Positioning System.






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