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. Contour lines never _______






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






4. Regulary spaced sample of points representing a surface.






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






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






7. A process of mathematical conversion.






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






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






10. Are made with GIS






11. 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.






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






13. Explanatory list of symbols on a map






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






15. Arcs only ___ at Nodes






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






17. GIS is ________






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






19. A data classification method that divides a set of attribute values into groups that contain an equal range of values






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






21. Triangulated Irregular Network.






22. The nature of relationships & connectivity between them.






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






24. The ability to link files together.






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






26. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






27. 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






28. Digital Elevation Model






29. 2 common _______: 1. Vector. 2. Raster.






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






31. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






32. Precision of a measurement with respect to time






33. The reverse of each other.






34. Geographic Coordinate System.






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






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






37. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






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






39. Preserve Shape






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






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






42. A reference system (geographic coordinates)






43. To avoid corrupt data!






44. 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.






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






46. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






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






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






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






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