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






2. Most popular form of USGS Map


3. Can not be made from other colors






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






5. 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.






6. Are made with GIS






7. When parallels & meridians intersect at right angles.






8. Points - Polygons - Lines






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






10. Contour lines never _______






11. Points taken at regular intervals from the cumulative distribution function (CDF) of a random variable.






12. Triangulated Irregular Network.






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






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






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






16. An assignment of geographic coordinates to locations.






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






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






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






20. Provide information about a particular topic or theme.






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






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






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






24. Preserve Shape






25. Assigning location information to various media (photos - video - music).






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






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






28. 2 ______: 1. Files/records. 2. Database/collection of files.






29. 80 % of all information contain _________






30. GIS is not a ______






31. Maps are restricted to a __________.






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






33. A Complete frame






34. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






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






36. Preserve Direction






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






38. To avoid corrupt data!






39. Google Maps or Microsoft Bing.






40. Deliver location / topographic information.






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






42. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






43. Description by name: ex London






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






45. Essentials of DBMS: Each record has a ________






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






47. Sailors and pilots use these maps to navigate






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






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






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