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Land Nav Flashcards

(53 cards)

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1
Q

What is the Field Manual for map reading and land navigation?

A

FM 3-25.26

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2
Q

What are the basic colors of a map and what does each color represent?

A

Brown - identifies all relief features and elevation, such as contours on older edition maps, and cultivated land on red-light readable maps.
Black - Indicates cultural (man-made) features such as buildings and roads, surveyed spot elevations, and all labels.
Blue - Identifies hydrography or water features such as lakes, swamps, rivers, and drainage.
Red - Classifies cultural features, such as populated areas, main roads, and boundaries, on older maps.
Red-Brown - These colors are combined to identify cultural features, all relief features, non-surveyed spot elevations, and elevation, such as contour lines on red-light readable maps.
Green- Identifies vegetation with military significance, such as woods, orchards, and vineyards.

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3
Q

Figures used to represent types of military organizations, installations, and activities are called?

A

Military Symbols

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4
Q

Where is the Legend of the map found?

A

Lower left margin

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5
Q

What are the imaginary lines on the ground connecting equal elevation that represent high and low ground elevation?

A

Contour lines

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6
Q

What are the 3 types of contour lines?

A

Index, intermediate, and supplementary

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7
Q

How many Mils are in one degree?

A

17.7 miles

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8
Q

There are 3 versions of “North” on a military map (True/False)

A

True

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9
Q

The inside of the smallest closed concentric circle on a map indicates what feature?

A

Hilltop

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10
Q

What are 5 major terrain features found on a map?

A 
Hill
Ridge
Valley
Saddle 
Depression
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11
Q

What are the 3 minor terrain features found on a military map?

A

Draw
Spur
Cliff

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12
Q

What are the 2 supplementary terrain features found on a military map?

A

Cut

Fill

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13
Q

Name 2 ways to hold a compass

A

Compass to cheek method

Center hold method

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14
Q

Are topographic symbols drawn to scale?

A

No

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15
Q

In military symbols, what colors are used for map overlay and what do they represent?

A 
Blue - Friendly Forces
Red - Enemy Forces
Black - Boundaries
Yellow - Contaminated Area
Green - Engineer obstacles
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16
Q

What is the general rule for reading military grid coordinates?

A

Right and up

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17
Q

How many sights does a compass have?

A

2

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18
Q

A man-made marker showing points of elevation is called what?

A

Benchmark

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19
Q

What is the Field Manual for Operational Terms and Graphics?

A

FM 1-02

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20
Q

What are the 4 quadrants on a map?

A

Northeast
Southeast
Northwest
Southwest

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21
Q

The vertical distance between contour lines is called the contour level (True/False)

A

True

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22
Q

What are the three main map sizes?

Study These Flashcards
A

Small
Medium
Large

23
Q

How close will an eight-digit grid get you to your point?

24
Q

How close will a 6 digit grid coordinate get you to your point?

25
What shape and contour lines indicate a saddle?
A saddle is normally represent as an hourglass
26
What are the contour lines that indicate a valley?
Contour lines forming a valley are U-shaped or V-shaped
27
What are the contour lines that indicate a ridge?
Contour lines forming a ridge tend to be U-shaped or V-shaped. The end of the contour line points away from the high ground
28
What shape are the contour lines that indicate a depression?
Depressions are represented by closed contour lines that have tick marks pointing toward low ground.
29
What shape are the contour lines that indicate a draw?
They are U-shaped or V-shaped pointing toward the high ground.
30
What shape are the contour lines that indicate a spur?
They are depicted with the U or V pointing away from high ground.
31
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
32
What must be done to a map before it can be used?
It must be oriented
33
What is an azimuth?
A horizontal angle, measured in a clockwise manner from a north base line, expressing direction.
34
What is the distance between grid lines on a combat map?
1 kilometer or 1000 meters
35
How many miles are there in a circle?
6400 miles in 360 degrees
36
How would you hold a lens attic compass?
Away from metal (weapons, electrical devices) level and firm
37
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.
38
What is the declination diagram?
Shows the angular relationship between the magnetic north, grid north and true north
39
What does UTM stand for?
Universal Transverse Mercator
40
The lens attic compass has a bezel ring; each bezel ring click is equal to how many degrees?
3
41
How many times would the bezel ring click if it were fully rotated?
120
42
Name 2 ways to orient a map?
Use a compass and terrain association
43
What does the term FLOT mean?
Forward Line of Troops
44
What are the alternate colors on a map and what do they mean?
Gray - alternate color for brown Yellow - built up areas Pink - political boundaries
45
What does the term intersection mean?
Finding the location of an unknown point by sighting two or more known points.
46
What does the term resection mean?
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.
47
What are the three elements for a land navigation process known as Dead Reckoning?
Known Starting point Known Distance Known Azimuth
48
What is the name of the map system the US uses?
UTM
49
Name 3 field expedient methods of determining direction
The Shadow-tip method The watch method The North Star method
50
Name the different slopes found on a map
Gentle Steep Concave Convex
51
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
52
What are the 2 methods of measuring an azimuth?
Compass and Protractor
53
What would you use on a map to measure actual ground distance?
The bar scale

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