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






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






4. 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.






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






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






7. The nature of relationships & connectivity between them.






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






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






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






11. 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






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






13. 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.






14. Points - Polygons - Lines






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






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






17. 80 % of all information contain _________






18. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






19. Preserve Shape






20. Sailors and pilots use these maps to navigate






21. GIS is not a ______






22. A Complete frame






23. Accuracy - reliability - responsibility.






24. Triangulated Irregular Network.






25. Arcs only ___ at Nodes






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






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






28. Description by name: ex London






29. An assignment of geographic coordinates to locations.






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






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






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






33. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






34. Most popular form of USGS Map

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






36. Google Maps or Microsoft Bing.






37. Essentials of DBMS: Each record has a ________






38. 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.






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






40. 2 common _______: 1. Vector. 2. Raster.






41. Can not be made from other colors






42. Regulary spaced sample of points representing a surface.






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






44. Precision of a measurement with respect to time






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






46. Understand spatial relations between landmarks>shortcuts.






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






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






49. Symbol on a map used to show direction






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