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






2. A Complete frame






3. A process of mathematical conversion.






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






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






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






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






8. Blue - Green - Red - NIR....






9. 2 ______: 1. Files/records. 2. Database/collection of files.






10. An assignment of geographic coordinates to locations.






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






12. Preserve Shape






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






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






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






16. A reference system (geographic coordinates)






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






18. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






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






20. Precision of a measurement with respect to time






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






22. The nature of relationships & connectivity between them.






23. Understand spatial relations between landmarks>shortcuts.






24. Representative fraction






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






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






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






28. Triangulated Irregular Network.






29. GIS is not a ______






30. Points - Polygons - Lines






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






32. 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.






33. Assigning location information to text & discourse.






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






35. Preserve Direction






36. Essentials of DBMS: Each record has a ________






37. 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.






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






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






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






41. Explanatory list of symbols on a map






42. Provide information about a particular topic or theme.






43. Digital Elevation Model






44. Smoothing & Shape abstraction.






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






46. 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






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






48. Most popular form of USGS Map


49. Maps are restricted to a __________.






50. Deliver location / topographic information.