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. GIS is ________






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






3. Sailors and pilots use these maps to navigate






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






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






6. Precision of a measurement with respect to time






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






8. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






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






10. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






11. Deliver location / topographic information.






12. Preserve Shape






13. A reference system (geographic coordinates)






14. Digital Elevation Model






15. Accuracy - reliability - responsibility.






16. A Complete frame






17. Geographic Coordinate System.






18. Arcs only ___ at Nodes






19. Smoothing & Shape abstraction.






20. Triangulated Irregular Network.






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






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






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






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






25. To avoid corrupt data!






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






27. 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.






28. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






29. 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






30. When areas on a map maintain the same proportional relationship to the areas on the earth that they represent.






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






32. When parallels & meridians intersect at right angles.






33. Google Maps or Microsoft Bing.






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






35. Understand spatial relations between landmarks>shortcuts.






36. Maps are restricted to a __________.






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






38. 2 ______: 1. Files/records. 2. Database/collection of files.






39. The reverse of each other.






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






41. Representative fraction






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






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






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






45. Are made with GIS






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






47. Global Positioning System.






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






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






50. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.