*Map Reading & Land Navigation (FM 3-25.26)

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marcoroxpolo
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238865
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*Map Reading & Land Navigation (FM 3-25.26)
Updated:
2013-10-05 17:11:10
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Map Reading Land Navigation FM 25 26
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Map Reading & Land Navigation (FM 3-25.26)
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  1. What is the FM for map reading and land nav?
    FM 3-25.26
  2. What are the basic colors of a map?
    • Black - cultural features ( roads & buildings)
    • Red- populated areas, boundaries
    • Brown - elevation , relief areas
    • green - vegetation 
    • blue- water
    • red brown -cultural and relief features
  3. What are military symbols?
    symbols used to represent military organizations, instillations, and activities
  4. Where is the legend found on the map?
    lower left margin?
  5. What are contour lines?
    lines that represent elevation
  6. what are the 3 types of contour lines?
    • 1. index
    • 2. intermediate
    • 3. supplementary
  7. how many mils are in one degree?
    17.7
  8. how many norths are on a map?
    three - true north, magnetic north, grid north
  9. What shape are contour lines that indicate a hill?
    the contour lines form circles
  10. what shape are the contour lines that indicate a saddle?
    an hour glass
  11. what shape contour lines represent a valley?
    u shaped of v shaped
  12. what shape are the contour lines that indicate a ridge?
    u shaped or v shaped with the closed ends pointing away from ground
  13. what shape contour lines indicated a draw?
    v or u shaped pointing toward high ground
  14. what shape contour lines indicate a spur?
    u or v shaped pointing away from high grounds
  15. what shapes are the contour lines that indicate a cliff?
    very close lines sometimes touching each other
  16. what shape are the contour lines indicate a cut?
    tic marks that extend from the cut line
  17. what shape are the contour lines indicate a fill?
    tic marks that point toward lower ground
  18. what must be done to a map before it can be used?
    it must be oriented
  19. what are the 5 major terrain features found on a map?
    • Hill
    • Valley
    • Ridge
    • Saddle 
    • Depression
  20. what are the 3 minor terrain features?
    • draw
    • spur
    • cliff
  21. what are the two supplementary terrain features?
    • cut 
    • fill
  22. what is a map?
    a geographical representation of the earths surface
  23. what is an azimuth?
    a horizontal angle that expresses direction
  24. what is contour line interval?
    the distance between adjacent contour lines on a map
  25. what is the distance between grid lines on a map?
    1000 meters
  26. how many mils are in a circle?
    6400 mils
  27. which north is used when using a map?
    magnetic north when using a compass and grid north when using a map
  28. how would you hold a lensatic compass?
    level and firm away from metal (weapons, electrical devices)
  29. what are the two was to hold a compass?
    • compass to cheek method
    • center hold method
  30. are topographic symbols draw to scale?
    no
  31. what do topographic symbols represent?
    man made and natural features
  32. what colors are used for a map overlay and what do they represent?
    • blue - friendly forces
    • red - enemy forces
    • black - boundaries
    • yellow - contaminated areas
    • green - engineer obstacles
  33. what is back azimuth?
    the opposite direction of an azimuth
  34. how do you figure out a back azimuth?
    add 180 degrees if the azimuth 180 degrees or less and subtract 180 degrees if the azimuth is 180 degrees or more
  35. what is a declination diagram?
    it shows the angular relationship between magnetic north, grid north and true north
  36. what is the general rule for reading grid coordinates?
    right and up
  37. how many sights does a compass have?
    2
  38. what is a benchmark?
    a man made marker showing points of elevation
  39. what are parallels of latitude?
    measured distances going north or south of the equator
  40. a bezel ring click is equal to how many degrees?
    3
  41. how many times would a bezel ring click if it were fully rotated?
    120
  42. large cities on a map are represented by what color?
    black
  43. name two ways to orient a map
    • use a compass
    • terrain association
  44. what does FLOT mean?
    forward line of operating troops
  45. what does the term intersection mean?
    finding an unknown point by sighting two or more known points
  46. why is a map so important?
    because a map can give you accurate distances locations and heights
  47. what is resection?
    method of locating ones position on a map by determining the grid azimuth of at least two known points
  48. what are the two scales on a compass?
    degrees and mils
  49. what are the four quadrants on a map?
    • northeast
    • southeast
    • northwest
    • southwest
  50. what are the three elements of dead reckoning?
    • known starting point
    • known distance
    • known azimuth
  51. what is the feature that makes the lensatic compass work well at night?
    the dials and needle are luminous
  52. what is a polar coordinate?
    plotting an unknown point using an azimuth and distance from a known starting point
  53. On a lensatic compass there are two rings, an outer black ring and an inner red ring, what are they used for?
    The inner red ring is used to find degrees, and the outer black ring is used to find mils
  54. Name 3 field expedient methods of determining direction
    The shadow-tip method, the watch method, and the North Star method
  55. What is a contour level?
    the vertical distance between contour lines
  56. the boarder line around the edge of the map is called what?
    neat line
  57. Name the different slopes found on a map.
    • Gentle
    • Steep
    • Concave
    • Convex
  58. You must find at least how many known locations on a map and the actual ground in order to plot your location accurately?
    at least 2
  59. What are the three main map sizes?
    • Small
    • Medium
    • Large
  60. What are two methods of measuring an azimuth?
    Compass and a protractor
  61. How close will an eight-digit grid get you to your point?
    10 meters
  62. How close will a six-digit grid coordinate get you to your point?
    100 meters
  63. What would you use on a map to measure actual ground distance?
    The bar scale

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