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. Understand spatial relations between landmarks>shortcuts.






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






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






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






6. To avoid corrupt data!






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






8. Global Positioning System.






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






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






11. Relative to another known feature






12. Geographic Coordinate System.






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






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






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






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






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






18. Sailors and pilots use these maps to navigate






19. Representative fraction






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






21. Arcs only ___ at Nodes






22. Preserve Shape






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






24. Lines that connect points of equal value.






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






26. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






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






28. 2 common _______: 1. Vector. 2. Raster.






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






30. Symbol on a map used to show direction






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






32. Contour lines never _______






33. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






34. Essentials of DBMS: Each record has a ________






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






36. The ability to link files together.






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






38. Provide information about a particular topic or theme.






39. GIS is not a ______






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






41. Precision of a measurement with respect to time






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






43. 2 ______: 1. Files/records. 2. Database/collection of files.






44. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






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






46. Are made with GIS






47. An assignment of geographic coordinates to locations.






48. GIS is ________ - spatial analysis & dependent on the computer.






49. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






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