Land Nav Flashcards
What publication covers map reading and land navigation
TC 3-25.26
What are the colors on the map
Black: Man-made. Red-brown: Cultural features and Elevations. Blue: Water features. Green: Vegetations. Brown: Relief and elevations. Red: Cultural features
What are military symbols
Represents type of military organization
Where is the legend
Lower left margin
What are contour lines
Imaginary lines representing elevations
What are 3 types of contour lines
Index, Intermediate, Supplementary
How many norths are there
True, Grid and magnetic north
What must be done to a map before using it
Must be oriented
5 Major terrain features
Hill, Valley, ridge, Saddle, depression
3 Minor terrain features
Draw, Spur, Cliff
2 Supplementary
Cut and Fill
What is a map
A graphic representation of the earth’s surface drawn to scale as seen from above
What’s an azimuth
A horizontal angle measured in clockwise manner from a north baseline
What is vertical distance
Distance between the highest and lowest points measured
What is the distance between grid lines on a combat map
1 KM or 1000 meters
Name two ways to hold a compass
Compass to cheek and Center hold
Are topographic symbols drawn to scale
No
What do topographic symbols represent?
Man-Made and natural features
What is a back azimuth
The opposite direction of an azimuth
How do you obtain a back azimuth
Add 180 degrees if the azimuth is 180 or less. subtract 180 if the azimuth is 180 or more
Large cities on map are represented by what color
Black
Name two ways to orient a map
Compass and terrain association
