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FMF > Section 114 Land Navigation > Flashcards

Section 114 Land Navigation Flashcards

1
Q

Where is the sheet name located?

A

Center of upper margin and either right,left side of lower margin

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2
Q

What is the sheet number used for?

A

Reference number for the map sheet

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3
Q

The sheet number is found in what two places?

A

Upper right and lower left margins

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4
Q

What representative fraction does a scale offer?

A

Ratio of a distance on the map to the corresponding distance on earths surface

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5
Q

Where is the scale located?

A

Upper left margin after the series name and center of the lower margin.

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6
Q

What is the purpose of the elevation guide?

A

Helps you rapidly identify major land forms

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7
Q

Where is the elevation guide located?

A

Lower right margin

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8
Q

What does the declination diagram indicate?

A

The angular relationships of true north, grid north, and magnetic north

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9
Q

Bar scales are used to convert what?

A

Map distance to ground distance

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10
Q

Where Are bar scales located?

A

Center of lower margin

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11
Q

The legend helps identify what?

A

Topographic symbols

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12
Q

Where is the legend located?

A

Lower left margin

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13
Q

What are grid lines?

A

Straight lines intersected at right angles forming a series of squares

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14
Q

How do grid squares measure on the most common military map?

A

1000x1000 meters

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15
Q

What is the basic map reading rule?

A

Read right then up

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16
Q

A four digit grid coordinate locates a point within how many square meters?

A

1000m

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17
Q

A six digit grid locates a point within how many meters?

A

100m

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18
Q

A eight digit grid will locate a point within how many meters?

A

10m

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19
Q

What is true north?

A

A line from any point on earth to the North Pole

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20
Q

When is true north utilized?

A

When traveling without a compass

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21
Q

How is true north located on the declination diagram?

A

A line ending with a star

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22
Q

How is magnetic north indicated?

A

North seeking arrow on a le static compass

23
Q

How is magnetic north symbolized on the declination diagram?

A

A line with half an arrow head

24
Q

How is grid north indicated on the declination diagram?

A

GN

25
Q

What must be used to work with an azimuth measured from grid north?

A

A protractor

26
Q

Define a Hill?

A

An area of high ground

27
Q

How is a hill depicted?

A

Contour lines forming concentric circles

28
Q

Define a Ridge?

A

Series of hills that are connected near the top

29
Q

Define a Saddle?

A

A dip or low point between two areas of higher ground

30
Q

How is a saddle depicted?

A

A hourglass or figure 8 shaped contour lines

31
Q

Define a Finger or Spur?

A

Short, continuous, sloping line of higher ground, normally jutting out from the side of a ridge or hill

32
Q

How is a finger depicted on a map?

A

U or V pointing away from high ground

33
Q

Define a Draw?

A

Short, continuos sloping line of LOW ground normally cut into a ridge or hill

34
Q

How is a draw depicted?

A

U or V toward high ground

35
Q

Define a Depression?

A

Low point in the ground or a sink hole. Surrounded by higher ground in all directions

36
Q

How is depression indicated?

A

Closed contour lines that have tick marks pointing toward low ground

37
Q

What does the cover contain on a lensatic compass?

A

Siting wire

2 luminous sighting dots for night navigation

38
Q

How is a floating dial mounted?

A

On a pivot

39
Q

What does a floating dial consist of?

A

Magnetic needle
Luminous arrow
Letters E 90 degrees
Letters W 270 degrees

40
Q

What are two scales on a floating dial?

A

Outer denotes MILS (black)

Inner denotes DEGREES (red)

41
Q

MILS are normally used by what?

A

Arty
Tanks
Mortar gunnery

42
Q

What formula is used to convert degrees into MILS?

A

Multiply degrees by 17.78

43
Q

What is the purpose of glass encasement?

A

Houses the floating dial and contains a fixed black index line

44
Q

What is a bezel ring?

A

Device that clicks when turned, 120 clicks when rotated fully, each click is 3 degrees

45
Q

Where is the thumb loop attached?

A

He base

46
Q

What is he rear site used for?

A

Lock the floating dial

47
Q

Why must the rear site be opened more than 45 degrees?

A

Allow the floating dial to float freely

48
Q

What is the lens for?

A

Read the floating dial

49
Q

What is the angular difference between grid north and magnetic north called?

A

G-M angle

50
Q

How should the GM angle be rounded?

A

Nearest whole degree

51
Q

How does location by inspection work?

A

Estimating your relation to several prominent features

52
Q

Why is it better to use two point resection than 1 point?

A

Doesn’t rely on ability to accurately estimate

53
Q

How far apart should two prominent features be when using the two point resection?

A

At least 30 degrees but no more than 150

54
Q

What is a map named after?

A

Most prominent cultural or geographic feature

FMF (23 decks)

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