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






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






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






4. The ability to link files together.






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






6. Symbol on a map used to show direction






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






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






9. Arcs only ___ at Nodes






10. Representative fraction






11. Contour lines never _______






12. 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.






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






14. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






15. 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.






16. Most popular form of USGS Map

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17. 2 ______: 1. Files/records. 2. Database/collection of files.






18. GIS is ________






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






20. Deliver location / topographic information.






21. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






22. Are made with GIS






23. Understand spatial relations between landmarks>shortcuts.






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






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






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






27. Description by name: ex London






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






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






30. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






31. Relative to another known feature






32. The nature of relationships & connectivity between them.






33. Geographic Coordinate System.






34. Provide information about a particular topic or theme.






35. Triangulated Irregular Network.






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






37. Global Positioning System.






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






39. A process of mathematical conversion.






40. Sailors and pilots use these maps to navigate






41. Regulary spaced sample of points representing a surface.






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






43. Digital Elevation Model






44. Explanatory list of symbols on a map






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






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






47. 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.






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






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






50. Preserve Shape