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






2. A Complete frame






3. GIS is not a ______






4. Accuracy - reliability - responsibility.






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






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






7. Maps are restricted to a __________.






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






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






10. Understand spatial relations between landmarks>shortcuts.






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






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






13. Contour lines never _______






14. 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.






15. Are made with GIS






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






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






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






19. Precision of a measurement with respect to time






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






21. Essentials of DBMS: Each record has a ________






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






23. The reverse of each other.






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






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






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






27. Sailors and pilots use these maps to navigate






28. The nature of relationships & connectivity between them.






29. Google Maps or Microsoft Bing.






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






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






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






33. Regulary spaced sample of points representing a surface.






34. The ability to link files together.






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






36. GIS is ________






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






38. Geographic Coordinate System.






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






40. Preserve Direction






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






42. 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.






43. Digital Elevation Model






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






45. A process of mathematical conversion.






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






47. Triangulated Irregular Network.






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






49. An assignment of geographic coordinates to locations.






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