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






2. Google Maps or Microsoft Bing.






3. 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.






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






5. The reverse of each other.






6. Data Modelling - Turning entities into complex objects (geometry - quality).






7. Essentials of DBMS: Each record has a ________






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






9. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






10. Preserve Direction






11. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






12. Sailors and pilots use these maps to navigate






13. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






14. Accuracy - reliability - responsibility.






15. Description by name: ex London






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






17. An assignment of geographic coordinates to locations.






18. Geographic Coordinate System.






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






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






21. Assigning location information to text & discourse.






22. A process of mathematical conversion.






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






24. Points - Polygons - Lines






25. HAL - H-Human nature. A-Arbitrary/socially constructed. L-Loss of info (hiding variance within a class or group).






26. Lines that connect points of equal value.






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






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






29. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






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






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






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






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






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






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






36. 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.






37. Understand spatial relations between landmarks>shortcuts.






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






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






40. Explanatory list of symbols on a map






41. Relative to another known feature






42. Are made with GIS






43. 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






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






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






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






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






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






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






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