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. A tabular file containing rows and columns; descriptive attributes about some object such as a geographic feature are contained in each row






2. 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.






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






4. Geographic Coordinate System.






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






6. Maps are restricted to a __________.






7. Google Maps or Microsoft Bing.






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






9. The nature of relationships & connectivity between them.






10. Are made with GIS






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






12. A process of mathematical conversion.






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






14. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






15. Sailors and pilots use these maps to navigate






16. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






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






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






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






20. Precision of a measurement with respect to time






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






22. Smoothing & Shape abstraction.






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






24. Provide information about a particular topic or theme.






25. Representative fraction






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






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






28. When parallels & meridians intersect at right angles.






29. Arcs only ___ at Nodes






30. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






31. User generated content (UGC). Volunteered geog. info (VGI). Professional vs amateur. Neogeography vs GIS.






32. Symbol on a map used to show direction






33. Understand spatial relations between landmarks>shortcuts.






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






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






36. GIS is not a ______






37. The ability to link files together.






38. 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.






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






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






41. GIS is ________






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






43. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






44. An assignment of geographic coordinates to locations.






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






46. Deliver location / topographic information.






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






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






49. Essentials of DBMS: Each record has a ________






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