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Board Study Guide > FM 3-25.26 Land Navigation > Flashcards

FM 3-25.26 Land Navigation Flashcards

0
Q

What are the basic colors of a map

A 
Black: man made features
Red-Brown: cultural and relief features 
Blue: water features 
Green: vegetation 
Brown: relief features and elevation 
Red: cultural features 
Other: special information
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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 military symbols

A

Figures used to represent types of military organizations instillation sand activities

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3
Q

Where is the legend of the map found

A

Lower left margin

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4
Q

What are contour lines

A

Imaginary lines on the ground connecting equal elevation. Represent high and low ground elevation

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5
Q

What are 3 types of contour lines

A

Index
Intermediate
Supplementary

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6
Q

How many Mils are in one degree

A

17.7 Mils

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7
Q

How many norths are there on a military map

A

3 true magnetic and grid north

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8
Q

What shape are the contour lines that indicate a hill

A

Concentric circles

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9
Q

What shape are the contour lines that indicate a saddle

A

Hourglass

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10
Q

What shape are the contour lines that indicate a valley

A

U shaped or V shaped

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11
Q

What shape are the contour lines that indicate a ridge

A

U shaped. V shaped. Closed end points away from high ground

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12
Q

What shape are the contour lines that indicate a depression

A

Closed contour lines that have tick marks pointing towards low ground

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13
Q

What shape are the contour lines that indicate a draw

A

U shaped or V shaped pointing towards high ground

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14
Q

What shape are the contour lines that indicate a spur

A

U or V pointing away from high ground

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15
Q

What shape are the contour lines that indicate a cliff

A

Contour lines very close together and in some instances touching

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16
Q

What shape are the contour lines that indicate a cut

A

Lines extend the length of the cut with tick marks that extend from the cut line to the road bed

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17
Q

What shape are the contour lines that indicate a fill

A

The line extends the length of the filled area and has tick marks that point towards 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 found on a map

A 
Hill
Ridge
Valley
Saddle
Depression
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20
Q

What are 3 minor terrain features found on a military map

A

Draw
Spur
Cliff

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21
Q

What are 2 supplementary terrain features found on 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 seem 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 expressing direction

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24
Q

what is vertical distance

A

the distance between the highest and lowest points measured

25
Q

what is a contour interval

A

the vertical distance between adjacent contour lines on a map

26
Q

what is the distance between grid lines on a combat map

A

1km or 1000meters

27
Q

how many mils are there in a circle

A

6400

28
Q

which north is used when using a military map

A

magnetic when using a compass. grid when using a map

29
Q

how would you hold a lensatic compass

A

away from metal, level and firm

30
Q

name 2 ways to hold a compass

A

compass-cheek method, center hold method

31
Q

what do topographic symbols represent

A

man-made and natural features

32
Q

in military symbols, what colors are used for a map overlay and what do they represent

A 
Blue: friendly forces
Red: enemy forces
Black: boundaries 
Yellow: contaminated area 
Green: Engineer obstacles
33
Q

what is back azimuth

A

the opposite direction of an azimuth

34
Q

how do you figure out a back azimuth

A

add 180 degrees if the azimuth is 180 degrees or less. subtract 180 degrees if the azimuth is 180 degrees or more

35
Q

what is the general rule for reading military grid coordiantes

A

right and up

36
Q

how many sights does a compass have

A

2

37
Q

what is a benchmark

A

a man made marker showing points of elevation

38
Q

what are parallels of latitude

A

measured distances going north or south of the equator

39
Q

what does UTM stand for

A

universal transverse mercator

40
Q

how many times would the bezel ring click if it were fully rotated

A

120

41
Q

large cities on a map are represented by what color

A

black

42
Q

name two ways to orient a map

A

use a compass, and terrain association

43
Q

the arrow on a compass always points what direction

A

magnetic north

44
Q

what are the alternate colors on a map and what do they mean

A

gray: alternate for brown
yellow: built up areas
pink: political boundaries

45
Q

what is longitude

A

imaginary lines that run north to south originating in greenwich, england and measured in degrees

46
Q

what is a topographic map

A

portrays terrain and land forms in a measurable way as well as horizontal features of the positions represented

47
Q

what is a small scale map

A

maps with scales of 1:1,000,000 and smaller. used for general planning and strategic study

48
Q

what is a medium scale map

A

maps with scales larger than 1:1,000,000 but smaller than 1:75,000 are used for operational planning

49
Q

what is a large scale map

A

maps with scales pf 1:75,000 and larger used for tactical, administrative and logistical planning

50
Q

what does the term intersection mean

A

finding the location of an unknown point by sighting two or more known points

51
Q

why is a map so important

A

can give you accurate distances, locations and heights, best routes, key terrain features and cover and concealment information

52
Q

what does resection mean

A

the method of locating ones position on a map by determining the grid azimuth to at least 2 well defined locations that can be pinpointed on a map

53
Q

if you find a symbol on a map that is unknown to you where would you look

A

the marginal data located on the outside lower portion of the map

54
Q

how many scales are there on a compass

A

degrees and mils

55
Q

what are the 4 quadrants on a map

A

northeast, southeast, northwest, southwest

56
Q

what are the 3 elements for dead reckoning

A

1) known starting point
2) known distance
3) known azimuth

57
Q

what is the name of the map system the US uses

A

UTM

58
Q

on a lensatic compass there are two rings, an outer black ring, and an inner red ring.what are they used for

A

red ring is to find degrees. black ring is used to find mils

59
Q

name 3 field expedient methods of determining directions

A

the shadow tip method, the watch method, the north star method

60
Q

the border line around the edge of the map is called the what

A

neat line

61
Q

name the different slopes found on a map

A

1) gentle
2) steep
3) concave
4) convex

Board Study Guide (28 decks)

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