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






2. Digital Elevation Model






3. 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.






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






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






6. An assignment of geographic coordinates to locations.






7. To avoid corrupt data!






8. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






9. The ability to link files together.






10. A process of mathematical conversion.






11. HAL - H-Human nature. A-Arbitrary/socially constructed. L-Loss of info (hiding variance within a class or group).






12. Symbol on a map used to show direction






13. Deliver location / topographic information.






14. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






15. The range of wavelengths sampled by a remote sensor.






16. Explanatory list of symbols on a map






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






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






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






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






21. 2 ______: 1. Files/records. 2. Database/collection of files.






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






23. The nature of relationships & connectivity between them.






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






25. Precision of a measurement with respect to time






26. Can not be made from other colors






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






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






29. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






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






31. 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.






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






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






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






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






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






37. Geographic Coordinate System.






38. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






39. Points - Polygons - Lines






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






41. Representative fraction






42. Google Maps or Microsoft Bing.






43. Provide information about a particular topic or theme.






44. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






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






46. Most popular form of USGS Map

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47. Contour lines never _______






48. Assigning location information to text & discourse.






49. Preserve Direction






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