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. Symbol on a map used to show direction






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






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






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






5. Blue - Green - Red - NIR....






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






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






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






9. The ability to link files together.






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






11. Google Maps or Microsoft Bing.






12. Smoothing & Shape abstraction.






13. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






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






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






16. Assigning location information to various media (photos - video - music).






17. Representative fraction






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






19. Arcs only ___ at Nodes






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






21. Precision of a measurement with respect to time






22. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






23. 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.






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






25. Global Positioning System.






26. Geographic Coordinate System.






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






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






29. 2 ______: 1. Files/records. 2. Database/collection of files.






30. Triangulated Irregular Network.






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






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






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






34. The nature of relationships & connectivity between them.






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






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






37. Contour lines never _______






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






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






40. Sailors and pilots use these maps to navigate






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






42. A process of mathematical conversion.






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






44. 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.






45. When parallels & meridians intersect at right angles.






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






47. Preserve Shape






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






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






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