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76 Cards in this Set
- Front
- Back
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What is the Field Manual for Map Reading & Land Navigation?
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FM 3-25.26
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What are the basic colors of a map and what does each color represent?
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-Black, cultural/man-made features & all labels
-Red-brown, cultural, all relief features, contour lines -Green, vegetation -Brown, all relief features, contour lines -Blue, water -Red, older maps-cultural, boundry lines |
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What are Military Symbols?
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Figures used to represent types of military organizations, installations and activities.
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Where is the legend of a Map found?
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Lower Left Margin.
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What are Contour Lines?
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Imaginary lines on the ground connecting equel elevation. Represent high & low ground elevations.
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What are 3 types of Contour Lines?
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1. Index
2. Intermediate 3. Supplementary |
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How many Mils are in 1 Degree?
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17.7 Mils
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How many Norths are there on a Military Map?
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3
1. True North 2. Magnetic North 3. Grid North |
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What shape are contour lines that indicate a Hill?
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Concentric circles, smallest closed circle is the Hill-top.
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What shape are contour lines that indicate a Saddle?
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Hour-glass shaped.
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What shape are contour lines that indicate a Valley?
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U-shaped or V-shaped.
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What shape are contour lines that indicate a Ridge?
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U or V shaped. Closed end points AWAY from High-ground.
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What shape are contour lines that indicate a Depression?
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Closed contour lines with tick marks pointing TOWARDS LOW ground.
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What shape are contour lines that indicate a Draw?
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U or V shaped. Closed end points TOWARDS High ground.
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What shape are contour lines indicating a Spur?
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U or V shaped. Closed end points AWAY from High ground.
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What shape are contour lines indicating a Cliff?
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Contour lines very close together, sometimes touching.
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What shape are contour lines indicating a Cut?
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Line extend the length of the Cut and have tick marks from the Cut-line to the road-bed.
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What shape are contour lines that indicate a Fill?
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Line extends the length of the Fill and Tick-marks that point toward Lower ground.
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What must be done to a map before it can be used?
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It must be Oriented.
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What are 5 MAJOR terrain features found on a map?
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1. Hill
2. Valley 3. Ridge 4. Saddle 5. Depression |
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What are the 3 MINOR terrain features found on a Military map?
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1. Cliff
2. Draw 3. Spur |
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What are the 2 SUPPLEMENTRY terrain features found on a Military map?
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1. Cut
2. Fill |
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What is a Map?
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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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What is an Azimuth?
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A horizontal angle, measured in a clock-wise manner, from a North Base-line, expressing direction.
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What is Vertical distance?
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The distance between the highest and lowest points measured.
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What is a Contour Interval?
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The Vertical distance between adjacent contour lines on a Map.
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What is the distance between Grid-lines on a Combat Map?
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1,000 meters or 1 Kilometer.
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How many Mils are there in a circle?
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6,400 Mils in 360 degrees.
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Which North is used when using a Military Map?
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Magnetic North- using a Compass
Grid North- using the Map |
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How would you hold a Lesatic Compass?
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1. compass to cheek
2. Center-hold method |
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Topicgraphic symbols drawn to scale?
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NO
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What do Topicgraphic symbols represent?
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Man-made and Natural features.
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In Military symbols, what colors are used for over-lay & what do they represent?
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-Blue, Friendly forces
-Red, Enemy forces -Black, Boundries -Yellow, Contaminated areas -Green, Engineer obstacles |
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What is a Back Azimuth?
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The opposite directon of Azimuth.
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How do you figure out a Back Azimuth?
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-Add 180 if Azimuth is 180 degreess or less
-Subtract 180 if Azimuth is 180 degrees or greater. |
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What is a Declination Diagram?
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Shows the Angular relationship between Magnetic, Grid and True North.
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What is the general rule for reading Military Grid Coordinates?
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Right and Up.
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How many sights does a compass have?
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2
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What is a Benchmark?
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A Man-made marker showing points of Elevation.
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What are parallels of Latitude?
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Measured distances going North or South of the Equator.
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What is an Arial Photograph?
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Any photograph taken from an airborne vehicle. Aircraft, drones, balloons & satellites.
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What does UTM stand for?
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Universal Transverse Mercator
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The Lensatic compass has a bezel ring; each click is equalto how many degrees?
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3 Degrees
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How many times would the Bezel ring click if it were fully rotated?
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120 clicks
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Large cities on a map are represented by what color?
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Black
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Name 2 ways to Orient a Map...
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1. with a compass
2. with terrain features |
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What is the Field Manual for Operational Terms and Graphics?
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FM 1-02
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The arrow on a compass always points to what direction?
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Magnetic North
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hat does the term FLOT stand for?
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Forward Line Of Troops
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What are the alternate colors on a map and what do they mean?
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-Grey, alternate for Brown
-Yellow, built-up areas -Pink, political boundries |
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What is Longitude?
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Imaginary lines that run North to South, originating in Greenwich, England and measured in degrees.
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What is a Topographic Map?
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A map that portrays terrain & land forms in a measurable way. As well as Horizontal features of the positions represented.
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What is a small-scale map?
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Maps with scales of 1:1,000,000 and smaller. Used for general planning. It covers a very large area at the expense of detail.
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What is a Medium-scale map?
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Scales larger than 1:1,000,000 but smaller than 1:75,000. Used for operational planning.
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What is a Large-scale map?
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Scale of 1:75,000 or larger. Used for Tactical, administrative and logistical planning. Standard is 1:50,000
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What does the term Intersection mean?
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Finding the location of an UNKNOWN point by sighting 2 or more KNOWN points.
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Why is a map so important?
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Whan used correctly, gives accurate DISTANCES, LOCATIONS, HEIGHTS, BEST ROUTES; key terrain features and cover & concealment info.
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What does the term Resection mean?
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Method of locating one's position on a map, by determining the Grid Azimuth of at least 2 well defined locations pin-pointed on the map.
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If you find a symbol on a map that is Unknown to you, where should you look?
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In the marginal data, Located on the outside of the lower portion of the map.
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How many scales are there on a compass? What are they?
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There are 2...1. Degrees2. Mils
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What are the 4 Quadrants on a map?
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1. North-east
2. South-east 3. North-west 4. South-west |
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What are the 3 elements for a Land navigation process known as Dead-Reckoning?
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KNOWN...
1. Starting Point 2. Distance 3. Azimuth |
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What is the feature that makes the Lensatic compass work well at night?
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The dials and needles are Luminous.
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What is a Polar Coordinate?
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Plottingor locating an UNKNOWN point, using na Azimuth and a DISTANCE from a KNOWN starting point.
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What is the name of the Map system that the U.S. uses?
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UTM
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On the Lensatic compass there are 2 rings, an outer black ring & an inner red ring, What are they used for?
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Outer Black Ring- find Mils
Inner Red- find Degrees |
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Name 3 field expediant methods of determining direction...
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1. Shadow-tip
2. Watch 3. North-star |
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What is a contour level?
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Vertical distance between contour lines. The amount of contour level is located in the Marginal information on the map.
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The border line around the edge of a map is called the what?
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The NEAT LINE
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Name the different slopes found on a map...
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1. Gentle
2. Steep 3. Concave 4. Convex |
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You must find at least how many KNOWN locations on the map and the ACTUAL ground in order to plot your location accurately?
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At least 2.
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What are the 3 main map sizes?
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1. Small
2. Medium 3. Large |
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What are 2 methods of measuring an Azimuth?
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1. Compass
2. Protractor |
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How close will an 8-digit grid get you to your point?
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within 10 meters
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How close will a 6-digit grid get you to your point?
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within 100 meters
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What would you use on a map to measure Actual Ground Distance?
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The BAR SCALE
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