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. Smoothing & Shape abstraction.






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






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






4. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






5. A Complete frame






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






7. Digital Elevation Model






8. Maps are restricted to a __________.






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






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






11. 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.






12. The ability to link files together.






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






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






15. Triangulated Irregular Network.






16. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






17. Geographic Coordinate System.






18. Essentials of DBMS: Each record has a ________






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






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






21. 3 topological concepts: 1. Connectivity - arcs connect to each other at nodes. 2._______ - arcs that connect to surround an area define a polygon. 3. Contiguity - arcs have direction & left & right sides.






22. The 4 types of ___________:SADD. 1. S - Shape: Conformal. 2. A - Area: Variant. 3. D - Direction: Preserved. 4. D - Distance: Variant.






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






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






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






26. Assigning location information to text & discourse.






27. Contour lines never _______






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






29. Deliver location / topographic information.






30. Points - Polygons - Lines






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






32. Provide information about a particular topic or theme.






33. Symbol on a map used to show direction






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






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






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






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






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






39. Understand spatial relations between landmarks>shortcuts.






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






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






42. Relative to another known feature






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






44. GIS is not a ______






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






46. Lines that connect points of equal value.






47. Representative fraction






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






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






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