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






2. Description by name: ex London






3. Global Positioning System.






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






5. Points - Polygons - Lines






6. Lines that connect points of equal value.






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






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






9. Geographic Coordinate System.






10. 2 common _______: 1. Vector. 2. Raster.






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






12. GIS is ________






13. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






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






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






16. Regulary spaced sample of points representing a surface.






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






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






19. When parallels & meridians intersect at right angles.






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






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






22. GIS is ________ - spatial analysis & dependent on the computer.






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






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






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






26. 2 ______: 1. Files/records. 2. Database/collection of files.






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






28. 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.






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






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






31. A reference system (geographic coordinates)






32. A process of mathematical conversion.






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






34. Google Maps or Microsoft Bing.






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






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






37. 80 % of all information contain _________






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






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






40. Smoothing & Shape abstraction.






41. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






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






43. Symbol on a map used to show direction






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






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






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






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






48. Townships were six miles square - and were subdivided into 36 sections - each section consisting of one square mile. One section of each township was set aside to support public education - and the remaining sections were to be sold at public auction






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






50. The nature of relationships & connectivity between them.