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






2. Points - Polygons - Lines






3. Regulary spaced sample of points representing a surface.






4. Deliver location / topographic information.






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






6. The reverse of each other.






7. Relative to another known feature






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






9. The nature of relationships & connectivity between them.






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






11. Google Maps or Microsoft Bing.






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






13. Essentials of DBMS: Each record has a ________






14. 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.






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






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






17. 2 ______: 1. Files/records. 2. Database/collection of files.






18. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






19. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






20. 80 % of all information contain _________






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






22. Global Positioning System.






23. A process of mathematical conversion.






24. Classes based on natural groupings through examination of histogram (good: minimizes differences bad: data range uneven)






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






26. When parallels & meridians intersect at right angles.






27. 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.






28. GIS is not a ______






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






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






31. Contour lines never _______






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






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






34. The ability to link files together.






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






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






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






38. Description by name: ex London






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






40. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






41. Preserve Shape






42. Can not be made from other colors






43. Preserve Direction






44. Maps are restricted to a __________.






45. Lines that connect points of equal value.






46. Digital Elevation Model






47. Are made with GIS






48. A reference system (geographic coordinates)






49. Accuracy - reliability - responsibility.






50. Geographic Coordinate System.







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