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. The nature of relationships & connectivity between them.






2. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






3. A reference system (geographic coordinates)






4. Regulary spaced sample of points representing a surface.






5. Lines that connect points of equal value.






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






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






8. Deliver location / topographic information.






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






10. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






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






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






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






14. Preserve Shape






15. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






16. Global Positioning System.






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






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






19. 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.






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






21. 80 % of all information contain _________






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






23. 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.






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






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






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






27. Google Maps or Microsoft Bing.






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






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






30. Representative fraction






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






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






33. Smoothing & Shape abstraction.






34. People creating their own maps - on their own terms by combining elements of an existing toolset.






35. Geographic Coordinate System.






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






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






38. Relative to another known feature






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






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






41. Most popular form of USGS Map


42. GIS is ________






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






44. Connectivity: ___________. 3 elements 1. Nodes & vertices define the shape of the arc. 2. Arcs have a from-node (or starting node) & a to-node (or ending-node). 3. Arcs only join at nodes.






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






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






47. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






48. Blue - Green - Red - NIR....






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






50. Arcs only ___ at Nodes