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






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






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






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






5. A reference system (geographic coordinates)






6. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






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






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






9. 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.






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






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






12. Contour lines never _______






13. Explanatory list of symbols on a map






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






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






16. 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.






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






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






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






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






21. Provide information about a particular topic or theme.






22. Regulary spaced sample of points representing a surface.






23. Arcs only ___ at Nodes






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






25. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






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






27. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






28. Are made with GIS






29. Smoothing & Shape abstraction.






30. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






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






32. Geographic Coordinate System.






33. Lines that connect points of equal value.






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






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






36. A Complete frame






37. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






38. Representative fraction






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






40. Deliver location / topographic information.






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






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






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






44. Maps are restricted to a __________.






45. Preserve Shape






46. The smallest pixel size visible in an image - the limit of magnification






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






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






49. Accuracy - reliability - responsibility.






50. Blue - Green - Red - NIR....