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 reverse of each other.






2. Representative fraction






3. When areas on a map maintain the same proportional relationship to the areas on the earth that they represent.






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






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






6. Symbol on a map used to show direction






7. 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.






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






9. LN 1. L - Level Surfaces. 2. N - NAVD88.






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






11. GIS is not a ______






12. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






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






14. When parallels & meridians intersect at right angles.






15. 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.






16. Most popular form of USGS Map


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






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






19. 2 common _______: 1. Vector. 2. Raster.






20. Precision of a measurement with respect to time






21. Preserve Direction






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






23. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






24. A process of mathematical conversion.






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






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






27. Accuracy - reliability - responsibility.






28. Arcs only ___ at Nodes






29. Blue - Green - Red - NIR....






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






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






32. Relative to another known feature






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






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






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






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






37. The nature of relationships & connectivity between them.






38. Explanatory list of symbols on a map






39. Deliver location / topographic information.






40. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






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






42. Are made with GIS






43. A Complete frame






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






45. An assignment of geographic coordinates to locations.






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






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






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






49. Triangulated Irregular Network.






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