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. Deliver location / topographic information.






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






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






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






5. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






6. The ability to link files together.






7. The 4 types of ___________:SADD. 1. S - Shape: Conformal. 2. A - Area: Variant. 3. D - Direction: Preserved. 4. D - Distance: Variant.






8. 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.






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






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






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






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






13. Precision of a measurement with respect to time






14. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






15. The reverse of each other.






16. Accuracy - reliability - responsibility.






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






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






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






20. GIS is not a ______






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






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






23. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






24. Area of the Earth that is displayed in each image






25. Sailors and pilots use these maps to navigate






26. Preserve Shape






27. When parallels & meridians intersect at right angles.






28. Regulary spaced sample of points representing a surface.






29. Representative fraction






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






31. Contour lines never _______






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






33. 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.






34. Description by name: ex London






35. A reference system (geographic coordinates)






36. Assigning location information to text & discourse.






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






38. Maps are restricted to a __________.






39. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






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






41. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






42. Are made with GIS






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






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






45. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






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






47. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






48. An assignment of geographic coordinates to locations.






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






50. GIS is ________