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23 Cards in this Set
- Front
- Back
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How is lensatic compass held? |
Centerhold and compass to cheek. |
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What is a map? |
It's a graphic representation of a portion of the Earth's surface drawn to scale, as seen from above. |
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Where is the legend on a map? |
At the lower left margin. |
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Which North is used when using a military map? |
Grid North |
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What is the basic rule for reading read coordinates on a military map? |
Right and up |
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What is a back azimuth? |
180 degrees in reverse of a measured azimuth |
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How close does an 8-digit, 6-digit, and 4 digit grid coordinate locate a point? |
10 meters, 100 meters, and 1,000 meters |
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What is an azimuth? |
Direction, defined as an horizontal measure from North in degrees or mils. |
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What are contour lines? |
Imaginary lines on the ground that connect points of equal elevation. |
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Can a lensatic compass be used at night? |
Yes, it has luminous dials and needles. |
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What are the three types of contour lines? |
Index, intermediate, and supplementary. |
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What two things can affect a lensatic compass? |
Metal or electricity. |
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What is longitude? |
Imaginary lines that run north and south originating in Greenwich, England and measured in degrees. |
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Name two scales on lensatic compass. |
Degrees and mils |
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Name the two supplemental terrain features. |
Cut and fill |
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Name the five types of terrain found on a map. |
Ridges, hilltops, valleys, depressions, and saddles. |
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What is a Baseline? |
The starting point or point of reference from which a unit of measure is taken. |
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Name the minor terrain features found on a map. |
Draw, spur, and cliff. |
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Name the three Norths on a military map. |
True North, magnetic North, and grid North. |
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What is latitude? |
The distance North or South from the Equator. |
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What are the five basic colors of a map and what do they stand for? |
Blue - water and water features Red - roads Black - man made object Green - vegetation Brown - contour lines, elevation, and relief |
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Define resection. |
A method used to locate 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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Define intersection. |
A method used to determine the location of an unknown point by successfully occupying at least two known positions on the ground and then map sighting on the unknown location. |
