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36 Cards in this Set
- Front
- Back
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Basic colors of a map |
Black, red-brown, green, blue, red, and brown |
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What are military symbols |
Figures used to represent types of military organizations, installations, and activities |
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Where is the legend of the map found? |
Lower left margin |
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What are contour lines |
Imaginary lines on the ground connecting equal elevation, representing high and low ground elevation |
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3 types of contour lines |
Index, intermediate, supplementary |
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How many mils in 1 degree |
17.7 |
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What must be done to a map before It can be used |
It must be oriented |
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5 major terrain features |
Hill, valley, ridge, saddle, depression |
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3 minor terrain features |
Draw, spur, cliff |
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2 supplementary features |
Cut, fill |
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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 is an azimuth |
A horizontal angle, measured from a north baseline, expressing direction |
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What is vertical distance |
The distance between the highest and lowest points measured |
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What is a contour interval |
The vertical distance between adjacent contour lines on a map |
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What is the distance between grid lines on a map |
1 kilometer, or 1000 meters |
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Which north is used when using a military map |
Grid north when using a map, magnetic north when using a compass |
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Two ways to hold a compass |
Center hold method, compass to cheek method |
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How would you hold a lunatic compass |
Away from metal, level and firm |
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What do topographic symbols represent |
Man-made and natural features |
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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 Green - engineer obstacles |
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What is a back azimuth |
The opposite direction of an azimuth |
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What is a benchmark |
A man-made marker showing points of elevation |
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What are parallels of latitude |
Measured distances going north or south of the equator |
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Two ways to orient a map |
Use a compass and terrain association |
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The arrow on a compass always pints what direction |
Magnetic north |
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What is longitude |
Imaginary lines that run north to south measured in degrees |
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What is a topographic map |
Portrays terrain and land forms in a measurable way |
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What does intersection mean |
Finding the location of an unknown point by sighting two or more known points |
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What does resection mean |
Method of locating ones position on a map determining the grid azimuth to locations that can be pinpointed on a map |
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If you find a symbol unknown to you, where do you look |
The marginal data, located on the outside lower portion of the map |
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How many scales on a compass |
2. Degrees/ mils |
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3 elements for land nav known as dead reckoning |
Known starting point, known distance, known azimuth |
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What is a polar coordinate |
Plotting or locating and unknown point using an azimuth or distance from a known starting point |
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What is the name of the map system we use |
UTM |
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What is a contour level |
Vertical distance between contour lines |
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What measures ground distance |
The bar scale |
