LAND NAVAGATION/ MAP READING

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Author:
71stchemical
ID:
149877
Filename:
LAND NAVAGATION/ MAP READING
Updated:
2012-04-25 22:30:36
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ARMY PROMOTION GUIDE
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ARMY STUDY GUIDE
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  1. What is the Field Manual for map reading and land navigation?
    FM 3-25.26
  2. What are the basic colors of a map, and what does each color represent?
    Black - Indicates cultural (man-made) features such as buildings and roads, surveyed spot elevations, and alllabels.Red-Brown - The colors red and brown are combined to identify cultural features, all relief features, non-surveyedspot elevations, and elevation, such as contour lines on red-light readable maps.Blue - Identifies hydrography or water features such as lakes, swamps, rivers, and drainage.Green - Identifies vegetation with military significance, such as woods, orchards, and vineyards.Brown - Identifies all relief features and elevation, such as contours on older edition maps, and cultivated land onred-light readable maps.Red - Classifies cultural features, such as populated areas, main roads, and boundaries, on older maps.Other - Occasionally other colors may be used to show special information. These are indicated in the marginalinformation as a rule.
  3. What are military symbols?
    Figures used to represent types of military organizations, installations, and activities
  4. Where is the Legend of the map found?
    Lower left margin
  5. What are contour lines?
    Imaginary lines on the ground connecting equal elevation, they represent high and low ground elevation.
  6. What are 3 types of contour lines?
    1. Index2. Intermediate3. Supplementary
  7. How many Mils are in one Degree?
    17.7 mils
  8. How many Norths are there on a military map?
    1. True north2. Magnetic north3. Grid north
  9. What shape are the contour lines that indicate a hill?
    A hill is shown on a map by contour lines forming concentric circles. The inside of the smallest closed circle is thehilltop.
  10. What shape are the contour lines that indicate a saddle?
    A saddle is normally represented as an hourglass
  11. What shape are the contour lines that indicate a valley?
    Contour lines forming a valley are either U-shaped or V-shaped.
  12. What shape are the contour lines that indicate a Ridge?
    Contour lines forming a ridge tend to be U-shaped or V-shaped. The closed end of the contour line points away fromhigh ground.
  13. What shape are the contour lines that indicate a depression?
    Usually only depressions that are equal to or greater than the contour interval will be shown. On maps, depressions arerepresented by closed contour lines that have tick marks pointing toward low ground.
  14. What shape are the contour lines that indicate a draw?
    The contour lines depicting a draw are U-shaped or V-shaped, pointing toward high ground.
  15. What shape are the contour lines that indicate a spur?
    Contour lines on a map depict a spur with the U or V pointing away from high ground.
  16. What shape are the contour lines that indicate a cliff?
    Cliffs are also shown by contour lines very close together and, in some instances, touching each other.
  17. What shape are the contour lines that indicate a cut?
    This contour line extends the length of the cut and has tick marks that extend from the cut line to the roadbed, if themap scale permits this level of detail.
  18. What shape are the contour lines that indicate a fill?
    This contour line extends the length of the filled area and has tick marks that point toward lower ground. If the mapscale permits, the length of the fill tick marks are drawn to scale and extend from the base line of the fill symbol
  19. What must be done to a map before it can be used?
    It must be oriented.
  20. What are 5 major terrain features found on a map?
    1. Hill2. Ridge3. Valley4. Saddle5. Depression
  21. What are the 3 minor terrain features found on a military map?
    1. Draw2. Spur3. Cliff
  22. What is a map?
    A map is a graphic representation of a portion of the earth’s surface drawn to scale, as seenfrom above.
  23. What is vertical distance?
    The distance between the highest and lowest points measured
  24. What is a contour interval?
    The vertical distance between adjacent contour lines on a map.
  25. What is the distance between grid lines on a combat map?
    1 kilometer or 1000 meters
  26. How many mils are there in a circle?
    6400 mils in 360 degrees
  27. Which north is used when using a military map?
    Magnetic north when using a compass, and grid north when using the map
  28. How would you hold a lensatic compass?
    Away from metal (weapons, electrical devices), level and firm
  29. Name two ways to hold a compass?
    1. Compass-to-Cheek Method2. Center-Hold Method
  30. Are topographic symbols drawn to scale?
    No
  31. What do topographic symbols represent?
    Man-made and natural features

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