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Map reading

What is the Field Manual for map reading and land navigation? FM 3-25.26
What are the basic colors of a map, and what does each color represent? Black- made, Red-Brown- contour lines on red-light readable maps, Blue- water, Green-vegetation, Brown- contours on older edition maps, Red- populated areas, Other- special information
What are military symbols? Figures used to represent types of military organizations, installations, and activities
Where is the legend on a map found? In the lower left margin
What are contour lines? imaginary lines representing high and low elevation.
What are 3 types of contour lines? Index, intermediate, supplementary
How many Mils are in one Degree? 17.7 mils
How many Norths are there on a military map? Three: Magnetic north, true north, and Grid north
What must be done to a map before it can be used? It must be oriented.
What are 5 major terrain features found on a map? Hill, Valley, Ridge, Saddle, Depression
What are the 3 minor terrain features found on a map? Draw, Spur, Cliff
What are the 2 supplementary terrain features found on a military map? Cut, Fill
What is a map? Graphic representation of a portion of the earth's surface drawn to scale, as seen from above
What is an azimuth? A horizontal angle, measured in a clockwise manner from a north base line, expressing direction
What is a vertical distance? The distance between two highest and lowest points measured.
What is a contour interval? The vertical distance between adjacent contour lines on a map
What is the distance between grid lines on a combat map? 1 kilometer or 1000 meters
How many mils are there in a circle? 6400 mils in 360 degrees
Which north is used when using a military map? Magnetic north when using a compass, and grid north when using the map.
How would you hold a lensatic compass? Away from metal, level and firm
Name two ways to hold a compass? Compass-to-Cheek Method, and Center-Hold Method
Are topographic symbols drawn to scale? No
What do topographic symbols represent? Man-made and natural features
In military symbols, what colors are used for a map overlay and what do they represent? Blue- friendly forces, Red- Enemy forces, Black- boundaries, Yellow- Contaminated area both friendly and enemy, Green- Engineer obstacles, both friendly and enemy
What is a back azimuth? The opposite direction of an azimuth.
How do you figure out a back azimuth? add 180 degrees if the azimuth is 180 degrees or less; subtract 180 degrees if the azimuth is 180 degrees or more
What is a declination diagram? Shows the angular relationship between the magnetic north, grid north and true north
What is the general rule for reading military grid coordinates? Right and Up
How many sights does a compass have? 2
What is a benchmark? A man-made marker showing points of elevation
What are parallels of latitude? Measured distances going north or south of the equator
What is an aerial photograph? images taken from an airborne vehicle
What does UTM stand for? Universal Transverse Mercator
The lensatic compass has a bezel ring; each bezel ring click is equal to how many degrees? 3
How many times would the bezel ring click if it were fully rotated? 120
Large cities on a map are represented by what color? Black
Name two ways to orient a map? Use a compass and terrain association
What is the Field Manual for Operational Terms and Graphics? FM 1-02
The arrow on a compass always points what direction? Magnetic north
What does the term FLOT mean? Forward Line Of Troops
What are the alternate colors on a map and what do they mean? Gray- Alternate color for brown, Yellow- built up areas, and pink- political boundaries
What is longitude? Imaginary lines that run north to south originating in Greenwich, England and measured in degrees
Whats a topographic map? Portrays terrain and land forms in a measurable way as well as horizontal features of the positions represented
If you find a symbol on a map that is unknown to you, where would you look? The marginal data, located on the outside lower portion of the map
How many scales are there on a compass, what are they? There are two: Degrees and Mils
What are the 4 quadrants on a map? Northeast, Southeast, Northwest, Southwest
What are the three elements for a land navigation process known as Dead Reckoning? Known starting point, Known distance, known azimuth
What is the feature that makes the lensatic compass work well at night? The dials and needles are luminious
What is a polar coordinate? Plotting or locating an unknown point using an azimuth and a distance from a known starting point
What is the name of the map system that the U.S. uses? UTM
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
Name 3 field expedient methods of determining direction The shadow-tip method, the watch method, and the North Star method
What is a contour level? It is the vertical distance between contour lines. The amount of the contour level is located in the Marginal Information on the map
The border line around the edge of the map is called the what? Neat line
Name the different slopes found on a map Gentle, Steep, Concave, Convex
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
What are the three main map sizes? Small, medium and large
What are two methods of measuring an azimuth? Compass and a protractor
How close will an eight-digit grid get you to your point?
Created by: DesK
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