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. When parallels & meridians intersect at right angles.






2. Essentials of DBMS: Each record has a ________






3. Accuracy - reliability - responsibility.






4. Explanatory list of symbols on a map






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






6. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






7. The ability to link files together.






8. 80 % of all information contain _________






9. The reverse of each other.






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






11. A process of mathematical conversion.






12. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






13. Description by name: ex London






14. 2 common _______: 1. Vector. 2. Raster.






15. Lines that connect points of equal value.






16. Points - Polygons - Lines






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






18. 1. E - Ellipsoid dimensions. 2. D - Datum origin. 3. A - Angular alignment.






19. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






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






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






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. Provide information about a particular topic or theme.






24. Relative to another known feature






25. 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.






26. Points taken at regular intervals from the cumulative distribution function (CDF) of a random variable.






27. Defined by NOIR NOIR N-Nominal - qualitive data. O-Ordinal - order or ranking. I-Interval - numeric scale - arbitrary units. R - Ratio - fixed origin - continuous scale.






28. Understand spatial relations between landmarks>shortcuts.






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






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






31. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






32. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






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






34. Are made with GIS






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






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






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






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






39. Most popular form of USGS Map


40. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






41. Preserve Direction






42. A Complete frame






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






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






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






46. Blue - Green - Red - NIR....






47. Preserve Shape






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






49. Assigning location information to text & discourse.






50. 2 reasons why Topology matters: 1. Error detection. 2. ___________.