What is the preferred method of using a lensatic compass when reading magnetic azimuths?
What is the preferred method of using a lensatic compass when reading magnetic azimuths?
Given a compass and a designated point on the ground. Determine the correct magnetic azimuth to the designated point within 3 degrees using the compass-to-cheek method, or within 10 degrees using the center-hold method.
How do you find the magnetic azimuth?
(d) To measure an azimuth, turn your entire body toward the object and point the compass cover directly at the object. Look down and read the azimuth from beneath the fixed black index line. This method can be used at night.
What is the most common military method of expressing direction?
azimuth
What is the difference between a ridge and a spur?
Ridge (Also: Arete or Spur) – A continuous elevated terrain with sloping sides. In the map represented by “U” or “V” shaped contour lines where the higher ground is in the wide opening. Arete is a narrow ridge and a Spur is a smaller ridge branching off a summit or a main ridge.
What is the difference between a spur and a valley?
A spur is a ‘V’-shaped hill that juts out. A simple way to tell a valley from a spur when looking at contour lines is to remember that if the ‘V’ points uphill it’s a valley, if it points downhill it’s a spur.
What are the four slope elements?
Characteristics of the slope elements: crest, cliff, talus and pediment.
What are slope processes?
Slopes comprise the greater part of the landscape and as an integral part of drainage basin they provide water and sediment to streams. The slope processes include weathering, erosion, transport and deposition of the material. The runoff is the water which flow on the land surface without infiltrating into the soil.
What is the difference between concave and convex slopes?
The concave slope is represented by the closely spaced contour in the upper locations and gradually become widely spaced in the lower areas. – Convex slope is a geographical feature with inconstant slopes. The convex slope is represented by the contour lines that have opposite features to the concave slope.
What is a convex roll?
A slope that steepens as it descends. It is also known as a convexity, roll, or rollover. Avalanches often fracture at or just below the roll in the slope.