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. Identify unique points - patterns or features in space.






2. Deliver location / topographic information.






3. Digital Elevation Model






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






5. Global Positioning System.






6. Description by name: ex London






7. GIS is not a ______






8. Google Maps or Microsoft Bing.






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






10. The reverse of each other.






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






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






13. Representative fraction






14. GIS is ________






15. 2 common _______: 1. Vector. 2. Raster.






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






17. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






18. Lines that connect points of equal value.






19. Explanatory list of symbols on a map






20. Blue - Green - Red - NIR....






21. Contour lines never _______






22. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






23. A process of mathematical conversion.






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






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






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






27. The nature of relationships & connectivity between them.






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






29. Are made with GIS






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






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






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






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






34. Preserve Shape






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






36. The ability to link files together.






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






38. Arcs only ___ at Nodes






39. Accuracy - reliability - responsibility.






40. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






41. 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.






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






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






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






46. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






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






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






49. Geographic Coordinate System.






50. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km