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






2. Geographic Coordinate System.






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






4. Smoothing & Shape abstraction.






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






6. Preserve Shape






7. Triangulated Irregular Network.






8. The ability to link files together.






9. The reverse of each other.






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






11. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






12. A process of mathematical conversion.






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






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






15. Global Positioning System.






16. Explanatory list of symbols on a map






17. The nature of relationships & connectivity between them.






18. Digital Elevation Model






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






20. 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.






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






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






23. When parallels & meridians intersect at right angles.






24. Understand spatial relations between landmarks>shortcuts.






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






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






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






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






29. 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.






30. Deliver location / topographic information.






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






32. GIS is ________






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






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






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






36. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






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






38. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






39. Relative to another known feature






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






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






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






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






44. To avoid corrupt data!






45. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






46. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






47. A Complete frame






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






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






50. Can not be made from other colors