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. Lines that connect points of equal value.






2. The 5 __________: TTCETH - 1. Triangle table 2. Triangle-Node table 3. Coordinate table 4. Triangle-Edge table 5. Hull-Edge table.






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






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






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






6. Precision of a measurement with respect to time






7. Google Maps or Microsoft Bing.






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






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






10. Global Positioning System.






11. An assignment of geographic coordinates to locations.






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






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






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






15. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






16. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






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






18. GIS is ________






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






20. Smoothing & Shape abstraction.






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






22. 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.






23. A process of mathematical conversion.






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






25. Provide information about a particular topic or theme.






26. Geographic Coordinate System.






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






28. Digital Elevation Model






29. Regulary spaced sample of points representing a surface.






30. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






31. Relative to another known feature






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






33. The 5 key concepts in Geography & GIS (LDDSN) 1. Location. 2. _________. 3. Distance. 4. Space. 5. Navigation.






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






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






36. 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






37. A reference system (geographic coordinates)






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






39. To avoid corrupt data!






40. Arcs only ___ at Nodes






41. 2 ______: 1. Files/records. 2. Database/collection of files.






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






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






44. GIS is not a ______






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






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






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






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






49. Sailors and pilots use these maps to navigate






50. Triangulated Irregular Network.