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






2. 80 % of all information contain _________






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






4. Converts what entities into objects in the computer 1. Geometry (points - lines - polygons). 2. Measurement of attributes. 3. Accuracy &/or error.






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






6. 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.






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






8. GIS is not a ______






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






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






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






12. To avoid corrupt data!






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






14. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






15. Accuracy - reliability - responsibility.






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






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






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






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






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






21. Essentials of DBMS: Each record has a ________






22. A reference system (geographic coordinates)






23. Deliver location / topographic information.






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






25. Explanatory list of symbols on a map






26. A process of mathematical conversion.






27. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






28. Provide information about a particular topic or theme.






29. Preserve Direction






30. GIS is ________






31. Understand spatial relations between landmarks>shortcuts.






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






33. Symbol on a map used to show direction






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






35. Arcs only ___ at Nodes






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






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






38. An assignment of geographic coordinates to locations.






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






40. Most popular form of USGS Map


41. 2 common _______: 1. Vector. 2. Raster.






42. Are made with GIS






43. Lines that connect points of equal value.






44. Maps are restricted to a __________.






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






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






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. 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






49. Precision of a measurement with respect to time






50. Points - Polygons - Lines