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






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






4. Can assume all values between any two specific values. They are obtained by measuring.






5. Preserve Shape






6. Blue - Green - Red - NIR....






7. Geographic Coordinate System.






8. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






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






10. Smoothing & Shape abstraction.






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






12. Triangulated Irregular Network.






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






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






15. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






16. GIS is ________






17. Understand spatial relations between landmarks>shortcuts.






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






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






20. Accuracy - reliability - responsibility.






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






22. 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.






23. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






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






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






26. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






27. To avoid corrupt data!






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






29. Symbol on a map used to show direction






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






31. Are made with GIS






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






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






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






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






36. Regulary spaced sample of points representing a surface.






37. Deliver location / topographic information.






38. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






39. Essentials of DBMS: Each record has a ________






40. Most popular form of USGS Map

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41. Explanatory list of symbols on a map






42. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






43. 2 common _______: 1. Vector. 2. Raster.






44. Provide information about a particular topic or theme.






45. Precision of a measurement with respect to time






46. The ability to link files together.






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






48. Google Maps or Microsoft Bing.






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






50. A process of mathematical conversion.