TC 3-25.26 Part 1 Flashcards

1
Q

What is the definition of a map?

A

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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2
Q

What is the purpose of a map?

A

provides information on the existence of the location and the distance between ground features, such as populated places and routes of travel, and communication

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3
Q

What scale is a small map?

A

1: 1,000,000 and smaller in scale

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4
Q

What scale is a medium map?

A

1:1,000,000 to 1: 75,000 in scale

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5
Q

What scale is a large map?

A

anything greater than 1:75,000

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6
Q

What is the typical scale of a map used for land nav?

A

1: 50,000

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7
Q

name three types of maps

A

Topographic map, Digital map, and Planimetric map

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8
Q

Where is the scale of a map located?

A

The upper left margins

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9
Q

Where is the elevation of a map located?

A

Lower right margins

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10
Q

Where is the bar scale located on a map?

A

The Center of the lower margins

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11
Q

Where is the legend located on a map?

A

Lower Left Margins

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12
Q

Where is the sheet name located

A

Upper center of the Margins

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13
Q

What are the colors of a map?

A
Black 
Blue
Brown
Red-Brown
Red
Green
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14
Q

What does black mean on a map?

A

Man made objects

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15
Q

What does blue mean on a map?

A

Water

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16
Q

What does brown mean on a map?

A

Contour Lines and relief features or cultivated land

17
Q

What does red-brown mean?

A

Contour lines and relief features under a red light

18
Q

What does green on a map mean?

A

Vegetation

19
Q

What does red mean on a map?

A

Roads and boundaries

20
Q

What is a latitude line?

A

a line on a map traveling north to south

21
Q

What is a longitude line?

A

a line on a map traveling east to west

22
Q

How big is a grid square on a large map?

A

1km By 1km

23
Q

How do you determine your pace count?

A

Counting how many paces it takes you to get to 100 meters

24
Q

What are the three norths?

A

True North, Magnetic north, grid north

25
What is true north?
north that is normally pointed out by a star
26
What is magnetic north?
North that is pointed out by a compass
27
What is grid north?
North as seen on a map
28
What is an Azimuth?
horizontal angle measured clockwise from a north base line
29
What is an intersection?
location of an unknown point by successively occupying at least two (preferably three) known positions on the ground, and then map sighting on the unknown location
30
What is a resection?
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
31
What is modified resection?
locating one’s position on the map when the person is located on a linear feature on the ground, such as a road