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53RD BOARD > FM 3-25.26 > Flashcards

FM 3-25.26 Flashcards

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

BLACK - indicates man made feature

RED-BROWN- the colors red brown identify cultural features, elevations such as countour lines readable in the map

BLUE- Identifies hydrography or water features

GREEN- Identifies vegetation

BROWN- all relief features and elevation

RED- classifies cultural features, such as populated areas, main roads, boundaries on older maps

Other- may be used to show special information.

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3
Q

What are military symbols?

A

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

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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 countour lines?

A

Imaginary lines on the ground connecting equal elevation, they represent high and low ground elevation

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6
Q

What are 3 types of countour lines ?

A

Index

Intermediate

Supplementary

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7
Q

How many mils in one degree?

A

17.7 mils

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8
Q

How many norths are there on a military map?

A

True north

Magnetic north

Grid north

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9
Q

What shape are the contour lines that indicate a hill?

A

Contour lines forming concentric circle

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10
Q

What shape are the contour line that indicate a saddle?

A

Represented as an hour glass

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11
Q

What shape are the contour lines that indicate a valley?

A

Forming a ridge to be U-shaped or V-shaped , contour lines point away from high ground

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12
Q

What are contour lines that indicate depression?

A

Represented by closed contour lines that have tick marks pointing toward low ground

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13
Q

What shape are contour lines that indicate a draw?

A

U-shaped or V-shaped, pointing toward high ground.

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14
Q

What shape are the contour lines that indicate a spur?

A

U or V shaped, pointing away from high ground

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15
Q

What shape are the contour lines that indicate a cliff?

A

Very close together, and in some instances touching each other

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16
Q

What shape are the contour lines that indicate a cut?

A

Lines extends the length of the cut and has tick marks that extend from the cut line to the roadbed.

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17
Q

What are the contour lines that indicate a fill?

A

Contour line extends the length of the filled area and has tick marks that point toward lower ground

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18
Q

What must be done to a map before it can be used?

A

It must be oriented

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19
Q

What are 5 major terrain features?

A 
Hill 
Valley 
Ridge 
Valley 
Saddle 
Depression
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20
Q

What are 3 minor terrain features?

A

Draw
Spur
Cliff

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21
Q

What are two supplementary terrain features found on a military map?

A

Cut

Fill

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22
Q

What is a map?

A

A map is a graphic representation of a portion of the earths surface drawn to scale as seen from above

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23
Q

What is an azimuth?

A

A horizontal angle, measured in a clockwise manner from a north base line.

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24
Q

What is vertical distance?

A

Distance between highest and lowest points measured

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25
What is a contour interval?
The vertical distance between adjacent contour lines on a map
26
What is distance between grid lines on a combat map?
1 kilometer or 1000 meters
27
How many mils are there in a circle?
6400 mils in 360 degrees
28
Which north is used when using a military map?
Magnetic north when using a compass, and grid north when using the map
29
How would you hold a lensatic compass?
Away from metal, level and firm
30
Name two ways to hold a compass
Cheek method Centerhold method
31
What do togographic symbols represent?
Man made and natural features
32
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
33
What is a back azimuth?
The opposite direction of an azimuth.
34
How do you figure out a back azimuth?
Add 180 degrees is azimuth is 180 degrees or less Subtract if azimuth is 180 degrees or more
35
What is the general rule for reading military grid coordinates?
Right and up
36
How many sights does a compass have?
2
37
What is a benchmark?
Man made marker showing points of elevation.
38
What are parallels of latitude?
Measured distances going north or south of the equator
39
What does UTM stand for?
Universal Transverse Mercator
40
How many times would the bezel ring click if it were fully rotated?
120
41
Large cities on a map are represented by what color?
Black
42
Name two ways to orient a map?
Use compass and terrain association
43
The arrow on a compass always points what direction?
Magnetic north
44
What are alternate colors on a map and what do they mean?
Gray alternate color for brow Yellow built up areas Pink- political boundaries
45
What is longitude?
Imaginary lines that run north to south originating in Greenwich, England and measured in degrees
46
What is topographic map?
Portrays terrain and land forms in measurable ways
47
What is a small scale map?
Maps with scales of 1:1,000,000
48
What is a medium scale map?
Maps with scale larger than 1:1,000,000 but smaller than 1:75,000
49
What is large scale map?
Maps with scales of 1:75,000 and larger
50
What does the term intersection mean?
Finding the location of an unknown point by sighting two or more points
51
Why is a map important?
A Map can give you accurate distances, locations, and heights
52
What does the term resection mean?
The method of locating ones position on a map by determining grid azimuth to atleast two well defined locations.
53
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
54
How many scales are there on a compass, what are they?
Degrees Mils
55
What are the 4 quadrants on a map?
Northeast Southeast Northwest Southwest
56
What are three elements for land a navigation process known as dead reckoning ?
Known starting point Known distance Known azimuth
57
What is the name of the map that the U.S uses?
UTM
58
On a pedantic compass there are two rings, an outer black ring and inner red ring, what are they?
The inner red ring is to find degrees , and the outer black ring is to find mils
59
Name 3 field expedient methods of determining direction
The shadow tip method, the watch method, and the North Star method.
60
The border line around the edge of the map is called the?
Neat line
61
Name the different slopes found on a map?
Gentle Steep Concave Convex

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