Term
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Definition
| A map is a graphic representation of a portion of the earth’s surface drawn to scale, as seen from above. |
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Term
| What is done with maps that re no longer needed? |
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Definition
| They are given to the proper authority; maps in danger od being captured are destroyed |
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Term
| What are the three sizes of maps? |
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Definition
1. Small; Those maps with scales of 1:1,000,000
2. Medium; Those maps with scales larger than 1:1,000,000 but smaller than 1:75,000
3. Large; Those maps with scales of 1:75,000 and larger |
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Term
| What colors are on a military map and what do they represent? |
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Definition
Black. Black indicates cultural (man-made) features such as buildings and roads, surveyed spot
elevations, and all labels.
Red-Brown. The colors red and brown are combined to identify cultural features, all relief
features, non-surveyed spot elevations, and elevation such as contour lines on red-light
readable maps.
Blue. Blue identifies hydrography or water features such as lakes, swamps, rivers, and drainage.
Green. Green identifies vegetation with military significance such as woods, orchards,
and vineyards.
Brown. Brown identifies all relief features and elevation such as contours on older edition maps,
and cultivated land on red-light readable maps. Red. 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. As a rule, these are
indicated in the marginal information. |
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Term
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Definition
| An azimuth is defined as a horizontal angle measured clockwise from a north base line. |
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Term
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Definition
This is the opposite direction of an azimuth. It is comparable to doing an “about
face.” To obtain a back azimuth from an azimuth, add 180 degrees if the azimuth is 180 degrees
or less; subtract 180 degrees if the azimuth is 180 degrees or more. |
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Term
| How close will a 6-digit grid coordinance get you to a point? |
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Definition
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Term
| How close will an eight-digit grid get you to your point? |
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Definition
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Term
| What are two methods of measuring an azimuth? |
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Definition
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Term
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Definition
Intersection is the location of an unknown point by successively occupying at least two (preferably
three) known positions on the ground, and then map sighting on the unknown location. |
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Term
| What are the two methods of intersection? |
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Definition
| the map and compass method and the straightedge method |
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Term
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Definition
Resection is the method of locating one’s position on a map by determining the grid azimuth to at
least two well-defined locations that can be pinpointed on the map. |
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Term
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Definition
A method of locating or plotting an unknown position from a known point by giving a direction and
a distance along that direction line is called polar plot. |
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Term
| What are the methods for using a compass? |
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Definition
| CENTERHOLD TECHNIQUE and COMPASS-TO-CHEEK TECHNIQUE |
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Term
| Which is the most accurate method? |
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Definition
The compass-to-cheek technique is used almost exclusively for sighting. It is the best
technique for this purpose. |
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Term
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Definition
Contour lines are the most common method of showing relief and elevation on a standard topographic
map. A contour line represents an imaginary line on the ground, above or below sea level. |
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Term
| What are the three types of contour lines? |
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Definition
Index. Starting at zero elevation or mean sea level, every fifth contour line is a heavier line. These
are known as index contour lines. Normally, each index contour line is numbered at some point. This
number is the elevation of that line.; Intermediate. The contour lines falling between the index contour lines are called intermediate
contour lines. These lines are finer and do not have their elevations given. There are normally four
intermediate contour lines between index contour lines.; Supplementary. These contour lines resemble dashes. They show changes in elevation of at least
one-half the contour interval. Supplementary lines are normally found where there is very little
change in elevation, such as on fairly level terrain. |
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Term
| What are the major terrain features on a military map? |
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Definition
| Major terrain features are hills, saddles, valleys, ridges, and depressions. |
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Term
| What are minor terrain features on a military map? |
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Definition
| Minor terrain features include draws, spurs, and cliffs. |
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Term
| What are supplementary terrain features on a military map? |
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Definition
| Supplementary terrain features include cuts and fills. |
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Term
| What is the declination diagram? |
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Definition
The declination diagram is located in the lower margin of large-scale
maps and indicates the angular relationships of true north, grid north, and magnetic north. |
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Term
| Where would you find useful information that will help you read a map? |
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Definition
| in the Marginal Information |
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Term
| Where will you find the Horizontal Datum Note of a Map and what does it represent? |
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Definition
| located in the center of the lower margin and The horizontal datum or horizontal-control datum is defined as a geodetic reference point |
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Term
| What are topographic symbols used to represent? |
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Definition
| the natural and man-made features of the earth, military personnel require some method for showing identity, size, location, or movement of soldiers; and military activities and installations |
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Term
| How close will a six digit grid be to a location? |
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Definition
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Term
| How close will an eight digit grid be to a location? |
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Definition
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Term
| How close will a four digit grid be to a location? |
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Definition
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Term
| How do you Obtain a Back Azimuth? |
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Definition
| To obtain a back azimuth from an azimuth, add 180 degrees if the azimuth is 180 degrees or less, or subtract 180 degrees if the azimuth is 180 degrees or more |
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Term
| When using Resection what method can give you greater Accuracy |
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Definition
| For greater accuracy, the desired method of resection would be to use three or more well-defined locations |
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Term
| What is Modified resection? |
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Definition
| Modified resection is the method of locating one's position on the map when the person is located on a linear feature on the ground, such as a road, canal, or stream |
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Term
| What are the ways to determine your Location on a Map? |
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Definition
1. Intersection
2. Resection
3. Modified resection |
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Term
| What are the Navigation Methods? |
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Definition
1. Dead Reckoning
2. Moving by Terrain Association
3. Combination of Techniques |
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Term
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Definition
A pace is equal to one natural step, about 30 inches long. To use the pace count method accurately, a
Soldier knows how many paces it takes to walk 100 m. |
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