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






2. Regulary spaced sample of points representing a surface.






3. Blue - Green - Red - NIR....






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






5. Maps are restricted to a __________.






6. 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.






7. 2 ______: 1. Files/records. 2. Database/collection of files.






8. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






9. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






10. A map containing information on only one topic or theme.






11. Arcs only ___ at Nodes






12. 80 % of all information contain _________






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






14. Can not be made from other colors






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






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






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






18. Understand spatial relations between landmarks>shortcuts.






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






20. Relative to another known feature






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






22. A 3-D frame of reference (model of the earth) used to determine surface locations.






23. Explanatory list of symbols on a map






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






25. Geographic Coordinate System.






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






27. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






28. A process of mathematical conversion.






29. Assigning location information to text & discourse.






30. Symbol on a map used to show direction






31. An assignment of geographic coordinates to locations.






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






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






34. 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.






35. 2 common _______: 1. Vector. 2. Raster.






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






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






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






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






40. Most popular form of USGS Map


41. GIS is ________






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






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






44. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






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






46. 1. An array of regulary spaced cells or pixels. 2. Each cell holds attributes (values).






47. Sailors and pilots use these maps to navigate






48. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






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






50. Deliver location / topographic information.