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. 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






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






3. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






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






5. Understand spatial relations between landmarks>shortcuts.






6. GIS is ________






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






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






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






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






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






12. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






13. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






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






15. Precision of a measurement with respect to time






16. Representative fraction






17. The nature of relationships & connectivity between them.






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






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






20. 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.






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






22. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






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






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






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






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






27. Contour lines never _______






28. 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.






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






30. Can not be made from other colors






31. Description by name: ex London






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






33. Lines that connect points of equal value.






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






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






36. Relative to another known feature






37. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






38. User generated content (UGC). Volunteered geog. info (VGI). Professional vs amateur. Neogeography vs GIS.






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






40. An assignment of geographic coordinates to locations.






41. Arcs only ___ at Nodes






42. 80 % of all information contain _________






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






44. A process of mathematical conversion.






45. 2 ______: 1. Files/records. 2. Database/collection of files.






46. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






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






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






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






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