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. Can not be made from other colors






2. Understand spatial relations between landmarks>shortcuts.






3. Deliver location / topographic information.






4. Are made with GIS






5. 80 % of all information contain _________






6. Preserve Shape






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






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






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






10. GIS is not a ______






11. Provide information about a particular topic or theme.






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






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






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






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






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






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






18. Blue - Green - Red - NIR....






19. When parallels & meridians intersect at right angles.






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






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






22. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






23. The nature of relationships & connectivity between them.






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






25. Smoothing & Shape abstraction.






26. Digital Elevation Model






27. A process of mathematical conversion.






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






29. 2 ______: 1. Files/records. 2. Database/collection of files.






30. Explanatory list of symbols on a map






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






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






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






34. A reference system (geographic coordinates)






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






36. 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.






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






38. The ability to link files together.






39. 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.






40. A Complete frame






41. Triangulated Irregular Network.






42. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






43. Points taken at regular intervals from the cumulative distribution function (CDF) of a random variable.






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






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






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






47. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






48. Arcs only ___ at Nodes






49. The reverse of each other.






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