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






2. Points - Polygons - Lines






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






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






5. Triangulated Irregular Network.






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






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






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






9. Sailors and pilots use these maps to navigate






10. Contour lines never _______






11. Understand spatial relations between landmarks>shortcuts.






12. Maps are restricted to a __________.






13. Most popular form of USGS Map

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14. Provide information about a particular topic or theme.






15. Can not be made from other colors






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






17. Accuracy - reliability - responsibility.






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






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






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






21. Blue - Green - Red - NIR....






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






23. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






24. Global Positioning System.






25. A Complete frame






26. Deliver location / topographic information.






27. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






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






29. 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.






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






31. Smoothing & Shape abstraction.






32. A process of mathematical conversion.






33. Map in which some thematic mapping variable is substituted for area (like a graph in a map)






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






35. Symbol on a map used to show direction






36. Representative fraction






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. The ability to link files together.






39. DBMS used for: _______ - access - organize & edit.






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






41. Geographic Coordinate System.






42. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






43. Description by name: ex London






44. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






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






46. Connectivity: ___________. 3 elements 1. Nodes & vertices define the shape of the arc. 2. Arcs have a from-node (or starting node) & a to-node (or ending-node). 3. Arcs only join at nodes.






47. 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.






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






49. Explanatory list of symbols on a map






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