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






2. Maps are restricted to a __________.






3. Understand spatial relations between landmarks>shortcuts.






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






5. Assigning location information to text & discourse.






6. Triangulated Irregular Network.






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






8. Global Positioning System.






9. GIS is ________






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






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






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






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






14. Lines that connect points of equal value.






15. Explanatory list of symbols on a map






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






17. Blue - Green - Red - NIR....






18. An assignment of geographic coordinates to locations.






19. The 3 _____: 1. True. 2. Magnetic. 3. Grid.






20. Most popular form of USGS Map

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21. 2 ______: 1. Files/records. 2. Database/collection of files.






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






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






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






25. Provide information about a particular topic or theme.






26. A reference system (geographic coordinates)






27. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






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






29. Symbol on a map used to show direction






30. Digital Elevation Model






31. Description by name: ex London






32. Can not be made from other colors






33. A process of mathematical conversion.






34. 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.






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






36. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






37. Accuracy - reliability - responsibility.






38. 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.






39. Representative fraction






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






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






42. Geographic Coordinate System.






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






44. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






45. The nature of relationships & connectivity between them.






46. Essentials of DBMS: Each record has a ________






47. To avoid corrupt data!






48. Sailors and pilots use these maps to navigate






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






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







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