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. Connect & travel between landmarks by moving thru space.






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






3. The nature of relationships & connectivity between them.






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






5. Geographic Coordinate System.






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






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






8. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






9. The reverse of each other.






10. A Complete frame






11. To avoid corrupt data!






12. Digital Elevation Model






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






14. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






15. 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.






16. Essentials of DBMS: Each record has a ________






17. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






18. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






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






20. Triangulated Irregular Network.






21. A process of mathematical conversion.






22. 2 common _______: 1. Vector. 2. Raster.






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






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






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






26. Representative fraction






27. Explanatory list of symbols on a map






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






30. Are made with GIS






31. Preserve Direction






32. 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.






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






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






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






36. Understand spatial relations between landmarks>shortcuts.






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






38. Lines that connect points of equal value.






39. Relative to another known feature






40. Accuracy - reliability - responsibility.






41. Maps are restricted to a __________.






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






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






44. GIS is not a ______






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






46. 80 % of all information contain _________






47. Provide information about a particular topic or theme.






48. Consists of F & E: 1. Features. 2. Entities.






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






50. 2 ______: 1. Files/records. 2. Database/collection of files.