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






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






3. Regulary spaced sample of points representing a surface.






4. Accuracy - reliability - responsibility.






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






6. When parallels & meridians intersect at right angles.






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






8. 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.






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






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






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






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






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






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






15. Representative fraction






16. 2 common _______: 1. Vector. 2. Raster.






17. Data Modelling - Turning entities into complex objects (geometry - quality).






18. Essentials of DBMS: Each record has a ________






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






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






21. GIS is not a ______






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






23. 2 ______: 1. Files/records. 2. Database/collection of files.






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






25. Digital Elevation Model






26. Precision of a measurement with respect to time






27. The ability to link files together.






28. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






29. A process of mathematical conversion.






30. Description by name: ex London






31. Provide information about a particular topic or theme.






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






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






34. Contour lines never _______






35. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






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






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






38. Blue - Green - Red - NIR....






39. Geographic Coordinate System.






40. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






41. Preserve Direction






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






43. The reverse of each other.






44. Explanatory list of symbols on a map






45. Smoothing & Shape abstraction.






46. 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.






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






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






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






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