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24 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What TC covers land Nav |
TC 3-25.26 |
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What is the Art and Science of expressing the known physical features of the earth graphically? |
Cartography |
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What is a map? |
A graphic representation of a portion of the earths surface drawn to scale as seen from above. |
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What does a map provide |
Info on the existence and distance between ground features and terrain |
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How are military maps categorized? |
By Scale & Type |
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What is the map of choice for land nav? |
1:50,000 |
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What is a topographic map? |
It portrays terrain features in a measurable way through contour lines |
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Colors on a map? |
Black- man made features ( buildings, roads) Red brown- Cultural feautures (all relief features) Blue- Water Green- Vegetation Brown- Elevation Red- Boundaries |
6 colors |
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What is the only rule when remembering and reading coordinates? |
Right and then up |
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4 methods to determine distance when you cannot use a map? |
Pace count odometer Substense- Visual perspective Estimate range |
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How long is a pace count? Per how many steps? |
30 inches long Every 100 steps |
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How many mils per degree? How many mils are in a compass? |
17.78 6400 |
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What are the three base lines used? References to help guide |
True north Grid north Magnetic north |
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What is True north? Magnetic north? Grid north? |
Line from the earths surface to the North Pole Direction to the North Pole indicates by the compass needle Established by vertical grid lines on a map, symbolized by GN |
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What is an azimuth? |
A horizontal angle measured clockwise from a north base line |
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What is a Back azimuth? |
The OPPOSITE direction of the azimuth |
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What is declination? |
The angular difference between two north’s ( compass & map ) |
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What compass is most simple and common when measuring direction? |
Lensatic compass |
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Two techniques when holding a lensatic compass? |
Center hold Compass to cheek technique |
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What are the five major terrain features? |
Hill Valley Ridge Saddle Depression |
Hidden Valley Ranch Salad Dressing |
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3 minor terrain features? |
Draw Spur Cliff |
Cowboy movement |
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What is an Elevation? Relief? |
Elevation: Point distance above or below sea level Relief: Representation of hills, valleys, and streams |
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What is a basic technique used for night time land navigation? |
Dead Reckoning |
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When a compass is not available what techniques can be used to find the four cardinal directions? |
Shadow tip method Watch Method Star method |
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