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. Symbol on a map used to show direction






2. 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






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






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






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






6. 2 ______: 1. Files/records. 2. Database/collection of files.






7. 80 % of all information contain _________






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






9. Google Maps or Microsoft Bing.






10. Preserve Shape






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






12. 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.






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






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






15. Assigning location information to text & discourse.






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






17. The reverse of each other.






18. A Complete frame






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






20. Essentials of DBMS: Each record has a ________






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






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






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






24. To avoid corrupt data!






25. GIS is ________






26. A reference system (geographic coordinates)






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






28. Description by name: ex London






29. Arcs only ___ at Nodes






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






31. Contour lines never _______






32. Regulary spaced sample of points representing a surface.






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






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






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






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






37. Are made with GIS






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






39. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






40. An assignment of geographic coordinates to locations.






41. Precision of a measurement with respect to time






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






43. Digital Elevation Model






44. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






45. A process of mathematical conversion.






46. The ability to link files together.






47. 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.






48. Sailors and pilots use these maps to navigate






49. When parallels & meridians intersect at right angles.






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