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






2. 1. An array of regulary spaced cells or pixels. 2. Each cell holds attributes (values).






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






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






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






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






7. Accuracy - reliability - responsibility.






8. Digital Elevation Model






9. Sailors and pilots use these maps to navigate






10. Points - Polygons - Lines






11. Lines that connect points of equal value.






12. 2 reasons why Topology matters: 1. Error detection. 2. ___________.






13. Regulary spaced sample of points representing a surface.






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






15. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






16. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






17. To avoid corrupt data!






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






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






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






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






22. The 3 _____: 1. True. 2. Magnetic. 3. Grid.






23. Relative to another known feature






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






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






26. The reverse of each other.






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






28. Preserve Shape






29. GIS is ________






30. Triangulated Irregular Network.






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






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






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






34. A Complete frame






35. GIS is not a ______






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






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






38. Maps are restricted to a __________.






39. An assignment of geographic coordinates to locations.






40. 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.






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






42. Smoothing & Shape abstraction.






43. Deliver location / topographic information.






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






45. Essentials of DBMS: Each record has a ________






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






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






48. Explanatory list of symbols on a map






49. The nature of relationships & connectivity between them.






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