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






2. When parallels & meridians intersect at right angles.






3. Description by name: ex London






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






5. Geographic Coordinate System.






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






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






8. 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.






9. Triangulated Irregular Network.






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






11. Precision of a measurement with respect to time






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






13. An assignment of geographic coordinates to locations.






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






15. DBMS used for: _______ - access - organize & edit.






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






17. Preserve Direction






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






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






21. To avoid corrupt data!






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






23. Accuracy - reliability - responsibility.






24. Sailors and pilots use these maps to navigate






25. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






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






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






28. A process of mathematical conversion.






29. 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.






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






31. The nature of relationships & connectivity between them.






32. 80 % of all information contain _________






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






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






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






36. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






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






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






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






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






41. 2 ______: 1. Files/records. 2. Database/collection of files.






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






43. Assigning location information to text & discourse.






44. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






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






46. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






47. 2 common _______: 1. Vector. 2. Raster.






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






49. Provide information about a particular topic or theme.






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